1use crate::{
2 ContextServerRegistry, CopyPathTool, CreateDirectoryTool, DbLanguageModel, DbThread,
3 DeletePathTool, DiagnosticsTool, EditFileTool, FetchTool, FindPathTool, GrepTool,
4 ListDirectoryTool, MovePathTool, NowTool, OpenTool, ProjectSnapshot, ReadFileTool,
5 RestoreFileFromDiskTool, SaveFileTool, SkillTool, SkillsContext, SpawnAgentTool,
6 StreamingEditFileTool, SystemPromptTemplate, Template, Templates, TerminalTool,
7 ToolPermissionDecision, UpdatePlanTool, WebSearchTool, decide_permission_from_settings,
8};
9use acp_thread::{MentionUri, UserMessageId};
10use action_log::ActionLog;
11use feature_flags::{
12 AgentSkillsFeatureFlag, FeatureFlagAppExt as _, StreamingEditFileToolFeatureFlag,
13 UpdatePlanToolFeatureFlag,
14};
15
16use agent_client_protocol as acp;
17use agent_settings::{
18 AgentProfileId, AgentSettings, SUMMARIZE_THREAD_DETAILED_PROMPT, SUMMARIZE_THREAD_PROMPT,
19};
20use anyhow::{Context as _, Result, anyhow};
21use chrono::{DateTime, Utc};
22use client::UserStore;
23use cloud_api_types::Plan;
24use collections::{HashMap, HashSet, IndexMap};
25use fs::Fs;
26use futures::stream;
27use futures::{
28 FutureExt,
29 channel::{mpsc, oneshot},
30 future::Shared,
31 stream::FuturesUnordered,
32};
33use gpui::{
34 App, AppContext, AsyncApp, Context, Entity, EventEmitter, SharedString, Task, WeakEntity,
35};
36use heck::ToSnakeCase as _;
37use language_model::{
38 CompletionIntent, LanguageModel, LanguageModelCompletionError, LanguageModelCompletionEvent,
39 LanguageModelId, LanguageModelImage, LanguageModelProviderId, LanguageModelRegistry,
40 LanguageModelRequest, LanguageModelRequestMessage, LanguageModelRequestTool,
41 LanguageModelToolResult, LanguageModelToolResultContent, LanguageModelToolSchemaFormat,
42 LanguageModelToolUse, LanguageModelToolUseId, Role, SelectedModel, Speed, StopReason,
43 TokenUsage, ZED_CLOUD_PROVIDER_ID,
44};
45use project::Project;
46use prompt_store::ProjectContext;
47use schemars::{JsonSchema, Schema};
48use serde::de::DeserializeOwned;
49use serde::{Deserialize, Serialize};
50use settings::{LanguageModelSelection, Settings, ToolPermissionMode, update_settings_file};
51use smol::stream::StreamExt;
52use std::{
53 collections::BTreeMap,
54 marker::PhantomData,
55 ops::RangeInclusive,
56 path::Path,
57 rc::Rc,
58 sync::Arc,
59 time::{Duration, Instant},
60};
61use std::{fmt::Write, path::PathBuf};
62use util::{ResultExt, debug_panic, markdown::MarkdownCodeBlock, paths::PathStyle};
63use uuid::Uuid;
64
65const TOOL_CANCELED_MESSAGE: &str = "Tool canceled by user";
66pub const MAX_TOOL_NAME_LENGTH: usize = 64;
67pub const MAX_SUBAGENT_DEPTH: u8 = 1;
68
69/// Context passed to a subagent thread for lifecycle management
70#[derive(Clone, Debug, Serialize, Deserialize)]
71pub struct SubagentContext {
72 /// ID of the parent thread
73 pub parent_thread_id: acp::SessionId,
74
75 /// Current depth level (0 = root agent, 1 = first-level subagent, etc.)
76 pub depth: u8,
77}
78
79/// The ID of the user prompt that initiated a request.
80///
81/// This equates to the user physically submitting a message to the model (e.g., by pressing the Enter key).
82#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Serialize, Deserialize)]
83pub struct PromptId(Arc<str>);
84
85impl PromptId {
86 pub fn new() -> Self {
87 Self(Uuid::new_v4().to_string().into())
88 }
89}
90
91impl std::fmt::Display for PromptId {
92 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
93 write!(f, "{}", self.0)
94 }
95}
96
97pub(crate) const MAX_RETRY_ATTEMPTS: u8 = 4;
98pub(crate) const BASE_RETRY_DELAY: Duration = Duration::from_secs(5);
99
100#[derive(Debug, Clone)]
101enum RetryStrategy {
102 ExponentialBackoff {
103 initial_delay: Duration,
104 max_attempts: u8,
105 },
106 Fixed {
107 delay: Duration,
108 max_attempts: u8,
109 },
110}
111
112#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
113pub enum Message {
114 User(UserMessage),
115 Agent(AgentMessage),
116 Resume,
117}
118
119impl Message {
120 pub fn as_agent_message(&self) -> Option<&AgentMessage> {
121 match self {
122 Message::Agent(agent_message) => Some(agent_message),
123 _ => None,
124 }
125 }
126
127 pub fn to_request(&self) -> Vec<LanguageModelRequestMessage> {
128 match self {
129 Message::User(message) => {
130 if message.content.is_empty() {
131 vec![]
132 } else {
133 vec![message.to_request()]
134 }
135 }
136 Message::Agent(message) => message.to_request(),
137 Message::Resume => vec![LanguageModelRequestMessage {
138 role: Role::User,
139 content: vec!["Continue where you left off".into()],
140 cache: false,
141 reasoning_details: None,
142 }],
143 }
144 }
145
146 pub fn to_markdown(&self) -> String {
147 match self {
148 Message::User(message) => message.to_markdown(),
149 Message::Agent(message) => message.to_markdown(),
150 Message::Resume => "[resume]\n".into(),
151 }
152 }
153
154 pub fn role(&self) -> Role {
155 match self {
156 Message::User(_) | Message::Resume => Role::User,
157 Message::Agent(_) => Role::Assistant,
158 }
159 }
160}
161
162#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
163pub struct UserMessage {
164 pub id: UserMessageId,
165 pub content: Vec<UserMessageContent>,
166}
167
168#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
169pub enum UserMessageContent {
170 Text(String),
171 Mention { uri: MentionUri, content: String },
172 Image(LanguageModelImage),
173}
174
175impl UserMessage {
176 pub fn to_markdown(&self) -> String {
177 let mut markdown = String::new();
178
179 for content in &self.content {
180 match content {
181 UserMessageContent::Text(text) => {
182 markdown.push_str(text);
183 markdown.push('\n');
184 }
185 UserMessageContent::Image(_) => {
186 markdown.push_str("<image />\n");
187 }
188 UserMessageContent::Mention { uri, content } => {
189 if !content.is_empty() {
190 let _ = writeln!(&mut markdown, "{}\n\n{}", uri.as_link(), content);
191 } else {
192 let _ = writeln!(&mut markdown, "{}", uri.as_link());
193 }
194 }
195 }
196 }
197
198 markdown
199 }
200
201 fn to_request(&self) -> LanguageModelRequestMessage {
202 let mut message = LanguageModelRequestMessage {
203 role: Role::User,
204 content: Vec::with_capacity(self.content.len()),
205 cache: false,
206 reasoning_details: None,
207 };
208
209 const OPEN_CONTEXT: &str = "<context>\n\
210 The following items were attached by the user. \
211 They are up-to-date and don't need to be re-read.\n\n";
212
213 const OPEN_FILES_TAG: &str = "<files>";
214 const OPEN_DIRECTORIES_TAG: &str = "<directories>";
215 const OPEN_SYMBOLS_TAG: &str = "<symbols>";
216 const OPEN_SELECTIONS_TAG: &str = "<selections>";
217 const OPEN_THREADS_TAG: &str = "<threads>";
218 const OPEN_FETCH_TAG: &str = "<fetched_urls>";
219 const OPEN_RULES_TAG: &str =
220 "<rules>\nThe user has specified the following rules that should be applied:\n";
221 const OPEN_DIAGNOSTICS_TAG: &str = "<diagnostics>";
222 const OPEN_DIFFS_TAG: &str = "<diffs>";
223 const MERGE_CONFLICT_TAG: &str = "<merge_conflicts>";
224
225 let mut file_context = OPEN_FILES_TAG.to_string();
226 let mut directory_context = OPEN_DIRECTORIES_TAG.to_string();
227 let mut symbol_context = OPEN_SYMBOLS_TAG.to_string();
228 let mut selection_context = OPEN_SELECTIONS_TAG.to_string();
229 let mut thread_context = OPEN_THREADS_TAG.to_string();
230 let mut fetch_context = OPEN_FETCH_TAG.to_string();
231 let mut rules_context = OPEN_RULES_TAG.to_string();
232 let mut diagnostics_context = OPEN_DIAGNOSTICS_TAG.to_string();
233 let mut diffs_context = OPEN_DIFFS_TAG.to_string();
234 let mut merge_conflict_context = MERGE_CONFLICT_TAG.to_string();
235
236 for chunk in &self.content {
237 let chunk = match chunk {
238 UserMessageContent::Text(text) => {
239 language_model::MessageContent::Text(text.clone())
240 }
241 UserMessageContent::Image(value) => {
242 language_model::MessageContent::Image(value.clone())
243 }
244 UserMessageContent::Mention { uri, content } => {
245 match uri {
246 MentionUri::File { abs_path } => {
247 write!(
248 &mut file_context,
249 "\n{}",
250 MarkdownCodeBlock {
251 tag: &codeblock_tag(abs_path, None),
252 text: &content.to_string(),
253 }
254 )
255 .ok();
256 }
257 MentionUri::PastedImage => {
258 debug_panic!("pasted image URI should not be used in mention content")
259 }
260 MentionUri::Directory { .. } => {
261 write!(&mut directory_context, "\n{}\n", content).ok();
262 }
263 MentionUri::Symbol {
264 abs_path: path,
265 line_range,
266 ..
267 } => {
268 write!(
269 &mut symbol_context,
270 "\n{}",
271 MarkdownCodeBlock {
272 tag: &codeblock_tag(path, Some(line_range)),
273 text: content
274 }
275 )
276 .ok();
277 }
278 MentionUri::Selection {
279 abs_path: path,
280 line_range,
281 ..
282 } => {
283 write!(
284 &mut selection_context,
285 "\n{}",
286 MarkdownCodeBlock {
287 tag: &codeblock_tag(
288 path.as_deref().unwrap_or("Untitled".as_ref()),
289 Some(line_range)
290 ),
291 text: content
292 }
293 )
294 .ok();
295 }
296 MentionUri::Thread { .. } => {
297 write!(&mut thread_context, "\n{}\n", content).ok();
298 }
299 MentionUri::Rule { .. } => {
300 write!(
301 &mut rules_context,
302 "\n{}",
303 MarkdownCodeBlock {
304 tag: "",
305 text: content
306 }
307 )
308 .ok();
309 }
310 MentionUri::Fetch { url } => {
311 write!(&mut fetch_context, "\nFetch: {}\n\n{}", url, content).ok();
312 }
313 MentionUri::Diagnostics { .. } => {
314 write!(&mut diagnostics_context, "\n{}\n", content).ok();
315 }
316 MentionUri::TerminalSelection { .. } => {
317 write!(
318 &mut selection_context,
319 "\n{}",
320 MarkdownCodeBlock {
321 tag: "console",
322 text: content
323 }
324 )
325 .ok();
326 }
327 MentionUri::GitDiff { base_ref } => {
328 write!(
329 &mut diffs_context,
330 "\nBranch diff against {}:\n{}",
331 base_ref,
332 MarkdownCodeBlock {
333 tag: "diff",
334 text: content
335 }
336 )
337 .ok();
338 }
339 MentionUri::MergeConflict { file_path } => {
340 write!(
341 &mut merge_conflict_context,
342 "\nMerge conflict in {}:\n{}",
343 file_path,
344 MarkdownCodeBlock {
345 tag: "diff",
346 text: content
347 }
348 )
349 .ok();
350 }
351 }
352
353 language_model::MessageContent::Text(uri.as_link().to_string())
354 }
355 };
356
357 message.content.push(chunk);
358 }
359
360 let len_before_context = message.content.len();
361
362 if file_context.len() > OPEN_FILES_TAG.len() {
363 file_context.push_str("</files>\n");
364 message
365 .content
366 .push(language_model::MessageContent::Text(file_context));
367 }
368
369 if directory_context.len() > OPEN_DIRECTORIES_TAG.len() {
370 directory_context.push_str("</directories>\n");
371 message
372 .content
373 .push(language_model::MessageContent::Text(directory_context));
374 }
375
376 if symbol_context.len() > OPEN_SYMBOLS_TAG.len() {
377 symbol_context.push_str("</symbols>\n");
378 message
379 .content
380 .push(language_model::MessageContent::Text(symbol_context));
381 }
382
383 if selection_context.len() > OPEN_SELECTIONS_TAG.len() {
384 selection_context.push_str("</selections>\n");
385 message
386 .content
387 .push(language_model::MessageContent::Text(selection_context));
388 }
389
390 if diffs_context.len() > OPEN_DIFFS_TAG.len() {
391 diffs_context.push_str("</diffs>\n");
392 message
393 .content
394 .push(language_model::MessageContent::Text(diffs_context));
395 }
396
397 if thread_context.len() > OPEN_THREADS_TAG.len() {
398 thread_context.push_str("</threads>\n");
399 message
400 .content
401 .push(language_model::MessageContent::Text(thread_context));
402 }
403
404 if fetch_context.len() > OPEN_FETCH_TAG.len() {
405 fetch_context.push_str("</fetched_urls>\n");
406 message
407 .content
408 .push(language_model::MessageContent::Text(fetch_context));
409 }
410
411 if rules_context.len() > OPEN_RULES_TAG.len() {
412 rules_context.push_str("</user_rules>\n");
413 message
414 .content
415 .push(language_model::MessageContent::Text(rules_context));
416 }
417
418 if diagnostics_context.len() > OPEN_DIAGNOSTICS_TAG.len() {
419 diagnostics_context.push_str("</diagnostics>\n");
420 message
421 .content
422 .push(language_model::MessageContent::Text(diagnostics_context));
423 }
424
425 if merge_conflict_context.len() > MERGE_CONFLICT_TAG.len() {
426 merge_conflict_context.push_str("</merge_conflicts>\n");
427 message
428 .content
429 .push(language_model::MessageContent::Text(merge_conflict_context));
430 }
431
432 if message.content.len() > len_before_context {
433 message.content.insert(
434 len_before_context,
435 language_model::MessageContent::Text(OPEN_CONTEXT.into()),
436 );
437 message
438 .content
439 .push(language_model::MessageContent::Text("</context>".into()));
440 }
441
442 message
443 }
444}
445
446fn codeblock_tag(full_path: &Path, line_range: Option<&RangeInclusive<u32>>) -> String {
447 let mut result = String::new();
448
449 if let Some(extension) = full_path.extension().and_then(|ext| ext.to_str()) {
450 let _ = write!(result, "{} ", extension);
451 }
452
453 let _ = write!(result, "{}", full_path.display());
454
455 if let Some(range) = line_range {
456 if range.start() == range.end() {
457 let _ = write!(result, ":{}", range.start() + 1);
458 } else {
459 let _ = write!(result, ":{}-{}", range.start() + 1, range.end() + 1);
460 }
461 }
462
463 result
464}
465
466impl AgentMessage {
467 pub fn to_markdown(&self) -> String {
468 let mut markdown = String::new();
469
470 for content in &self.content {
471 match content {
472 AgentMessageContent::Text(text) => {
473 markdown.push_str(text);
474 markdown.push('\n');
475 }
476 AgentMessageContent::Thinking { text, .. } => {
477 markdown.push_str("<think>");
478 markdown.push_str(text);
479 markdown.push_str("</think>\n");
480 }
481 AgentMessageContent::RedactedThinking(_) => {
482 markdown.push_str("<redacted_thinking />\n")
483 }
484 AgentMessageContent::ToolUse(tool_use) => {
485 markdown.push_str(&format!(
486 "**Tool Use**: {} (ID: {})\n",
487 tool_use.name, tool_use.id
488 ));
489 markdown.push_str(&format!(
490 "{}\n",
491 MarkdownCodeBlock {
492 tag: "json",
493 text: &format!("{:#}", tool_use.input)
494 }
495 ));
496 }
497 }
498 }
499
500 for tool_result in self.tool_results.values() {
501 markdown.push_str(&format!(
502 "**Tool Result**: {} (ID: {})\n\n",
503 tool_result.tool_name, tool_result.tool_use_id
504 ));
505 if tool_result.is_error {
506 markdown.push_str("**ERROR:**\n");
507 }
508
509 match &tool_result.content {
510 LanguageModelToolResultContent::Text(text) => {
511 writeln!(markdown, "{text}\n").ok();
512 }
513 LanguageModelToolResultContent::Image(_) => {
514 writeln!(markdown, "<image />\n").ok();
515 }
516 }
517
518 if let Some(output) = tool_result.output.as_ref() {
519 writeln!(
520 markdown,
521 "**Debug Output**:\n\n```json\n{}\n```\n",
522 serde_json::to_string_pretty(output).unwrap()
523 )
524 .unwrap();
525 }
526 }
527
528 markdown
529 }
530
531 pub fn to_request(&self) -> Vec<LanguageModelRequestMessage> {
532 let mut assistant_message = LanguageModelRequestMessage {
533 role: Role::Assistant,
534 content: Vec::with_capacity(self.content.len()),
535 cache: false,
536 reasoning_details: self.reasoning_details.clone(),
537 };
538 for chunk in &self.content {
539 match chunk {
540 AgentMessageContent::Text(text) => {
541 assistant_message
542 .content
543 .push(language_model::MessageContent::Text(text.clone()));
544 }
545 AgentMessageContent::Thinking { text, signature } => {
546 assistant_message
547 .content
548 .push(language_model::MessageContent::Thinking {
549 text: text.clone(),
550 signature: signature.clone(),
551 });
552 }
553 AgentMessageContent::RedactedThinking(value) => {
554 assistant_message.content.push(
555 language_model::MessageContent::RedactedThinking(value.clone()),
556 );
557 }
558 AgentMessageContent::ToolUse(tool_use) => {
559 if self.tool_results.contains_key(&tool_use.id) {
560 assistant_message
561 .content
562 .push(language_model::MessageContent::ToolUse(tool_use.clone()));
563 }
564 }
565 };
566 }
567
568 let mut user_message = LanguageModelRequestMessage {
569 role: Role::User,
570 content: Vec::new(),
571 cache: false,
572 reasoning_details: None,
573 };
574
575 for tool_result in self.tool_results.values() {
576 let mut tool_result = tool_result.clone();
577 // Surprisingly, the API fails if we return an empty string here.
578 // It thinks we are sending a tool use without a tool result.
579 if tool_result.content.is_empty() {
580 tool_result.content = "<Tool returned an empty string>".into();
581 }
582 user_message
583 .content
584 .push(language_model::MessageContent::ToolResult(tool_result));
585 }
586
587 let mut messages = Vec::new();
588 if !assistant_message.content.is_empty() {
589 messages.push(assistant_message);
590 }
591 if !user_message.content.is_empty() {
592 messages.push(user_message);
593 }
594 messages
595 }
596}
597
598#[derive(Default, Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
599pub struct AgentMessage {
600 pub content: Vec<AgentMessageContent>,
601 pub tool_results: IndexMap<LanguageModelToolUseId, LanguageModelToolResult>,
602 pub reasoning_details: Option<serde_json::Value>,
603}
604
605#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
606pub enum AgentMessageContent {
607 Text(String),
608 Thinking {
609 text: String,
610 signature: Option<String>,
611 },
612 RedactedThinking(String),
613 ToolUse(LanguageModelToolUse),
614}
615
616pub trait TerminalHandle {
617 fn id(&self, cx: &AsyncApp) -> Result<acp::TerminalId>;
618 fn current_output(&self, cx: &AsyncApp) -> Result<acp::TerminalOutputResponse>;
619 fn wait_for_exit(&self, cx: &AsyncApp) -> Result<Shared<Task<acp::TerminalExitStatus>>>;
620 fn kill(&self, cx: &AsyncApp) -> Result<()>;
621 fn was_stopped_by_user(&self, cx: &AsyncApp) -> Result<bool>;
622}
623
624pub trait SubagentHandle {
625 /// The session ID of this subagent thread
626 fn id(&self) -> acp::SessionId;
627 /// The current number of entries in the thread.
628 /// Useful for knowing where the next turn will begin
629 fn num_entries(&self, cx: &App) -> usize;
630 /// Runs a turn for a given message and returns both the response and the index of that output message.
631 fn send(&self, message: String, cx: &AsyncApp) -> Task<Result<String>>;
632}
633
634pub trait ThreadEnvironment {
635 fn create_terminal(
636 &self,
637 command: String,
638 cwd: Option<PathBuf>,
639 output_byte_limit: Option<u64>,
640 cx: &mut AsyncApp,
641 ) -> Task<Result<Rc<dyn TerminalHandle>>>;
642
643 fn create_subagent(&self, label: String, cx: &mut App) -> Result<Rc<dyn SubagentHandle>>;
644
645 fn resume_subagent(
646 &self,
647 _session_id: acp::SessionId,
648 _cx: &mut App,
649 ) -> Result<Rc<dyn SubagentHandle>> {
650 Err(anyhow::anyhow!(
651 "Resuming subagent sessions is not supported"
652 ))
653 }
654}
655
656#[derive(Debug)]
657pub enum ThreadEvent {
658 UserMessage(UserMessage),
659 AgentText(String),
660 AgentThinking(String),
661 ToolCall(acp::ToolCall),
662 ToolCallUpdate(acp_thread::ToolCallUpdate),
663 Plan(acp::Plan),
664 ToolCallAuthorization(ToolCallAuthorization),
665 SubagentSpawned(acp::SessionId),
666 Retry(acp_thread::RetryStatus),
667 Stop(acp::StopReason),
668}
669
670#[derive(Debug)]
671pub struct NewTerminal {
672 pub command: String,
673 pub output_byte_limit: Option<u64>,
674 pub cwd: Option<PathBuf>,
675 pub response: oneshot::Sender<Result<Entity<acp_thread::Terminal>>>,
676}
677
678#[derive(Debug, Clone)]
679pub struct ToolPermissionContext {
680 pub tool_name: String,
681 pub input_values: Vec<String>,
682 pub scope: ToolPermissionScope,
683}
684
685#[derive(Debug, Clone, Copy, PartialEq, Eq)]
686pub enum ToolPermissionScope {
687 ToolInput,
688 SymlinkTarget,
689}
690
691impl ToolPermissionContext {
692 pub fn new(tool_name: impl Into<String>, input_values: Vec<String>) -> Self {
693 Self {
694 tool_name: tool_name.into(),
695 input_values,
696 scope: ToolPermissionScope::ToolInput,
697 }
698 }
699
700 pub fn symlink_target(tool_name: impl Into<String>, target_paths: Vec<String>) -> Self {
701 Self {
702 tool_name: tool_name.into(),
703 input_values: target_paths,
704 scope: ToolPermissionScope::SymlinkTarget,
705 }
706 }
707
708 /// Builds the permission options for this tool context.
709 ///
710 /// This is the canonical source for permission option generation.
711 /// Tests should use this function rather than manually constructing options.
712 ///
713 /// # Shell Compatibility for Terminal Tool
714 ///
715 /// For the terminal tool, "Always allow" options are only shown when the user's
716 /// shell supports POSIX-like command chaining syntax (`&&`, `||`, `;`, `|`).
717 ///
718 /// **Why this matters:** When a user sets up an "always allow" pattern like `^cargo`,
719 /// we need to parse the command to extract all sub-commands and verify that EVERY
720 /// sub-command matches the pattern. Otherwise, an attacker could craft a command like
721 /// `cargo build && rm -rf /` that would bypass the security check.
722 ///
723 /// **Supported shells:** Posix (sh, bash, dash, zsh), Fish 3.0+, PowerShell 7+/Pwsh,
724 /// Cmd, Xonsh, Csh, Tcsh
725 ///
726 /// **Unsupported shells:** Nushell (uses `and`/`or` keywords), Elvish (uses `and`/`or`
727 /// keywords), Rc (Plan 9 shell - no `&&`/`||` operators)
728 ///
729 /// For unsupported shells, we hide the "Always allow" UI options entirely, and if
730 /// the user has `always_allow` rules configured in settings, `ToolPermissionDecision::from_input`
731 /// will return a `Deny` with an explanatory error message.
732 pub fn build_permission_options(&self) -> acp_thread::PermissionOptions {
733 use crate::pattern_extraction::*;
734 use util::shell::ShellKind;
735
736 let tool_name = &self.tool_name;
737 let input_values = &self.input_values;
738 if self.scope == ToolPermissionScope::SymlinkTarget {
739 return acp_thread::PermissionOptions::Flat(vec![
740 acp::PermissionOption::new(
741 acp::PermissionOptionId::new("allow"),
742 "Yes",
743 acp::PermissionOptionKind::AllowOnce,
744 ),
745 acp::PermissionOption::new(
746 acp::PermissionOptionId::new("deny"),
747 "No",
748 acp::PermissionOptionKind::RejectOnce,
749 ),
750 ]);
751 }
752
753 // Check if the user's shell supports POSIX-like command chaining.
754 // See the doc comment above for the full explanation of why this is needed.
755 let shell_supports_always_allow = if tool_name == TerminalTool::NAME {
756 ShellKind::system().supports_posix_chaining()
757 } else {
758 true
759 };
760
761 // For terminal commands with multiple pipeline commands, use DropdownWithPatterns
762 // to let users individually select which command patterns to always allow.
763 if tool_name == TerminalTool::NAME && shell_supports_always_allow {
764 if let Some(input) = input_values.first() {
765 let all_patterns = extract_all_terminal_patterns(input);
766 if all_patterns.len() > 1 {
767 let mut choices = Vec::new();
768 choices.push(acp_thread::PermissionOptionChoice {
769 allow: acp::PermissionOption::new(
770 acp::PermissionOptionId::new(format!("always_allow:{}", tool_name)),
771 format!("Always for {}", tool_name.replace('_', " ")),
772 acp::PermissionOptionKind::AllowAlways,
773 ),
774 deny: acp::PermissionOption::new(
775 acp::PermissionOptionId::new(format!("always_deny:{}", tool_name)),
776 format!("Always for {}", tool_name.replace('_', " ")),
777 acp::PermissionOptionKind::RejectAlways,
778 ),
779 sub_patterns: vec![],
780 });
781 choices.push(acp_thread::PermissionOptionChoice {
782 allow: acp::PermissionOption::new(
783 acp::PermissionOptionId::new("allow"),
784 "Only this time",
785 acp::PermissionOptionKind::AllowOnce,
786 ),
787 deny: acp::PermissionOption::new(
788 acp::PermissionOptionId::new("deny"),
789 "Only this time",
790 acp::PermissionOptionKind::RejectOnce,
791 ),
792 sub_patterns: vec![],
793 });
794 return acp_thread::PermissionOptions::DropdownWithPatterns {
795 choices,
796 patterns: all_patterns,
797 tool_name: tool_name.clone(),
798 };
799 }
800 }
801 }
802
803 let extract_for_value = |value: &str| -> (Option<String>, Option<String>) {
804 if tool_name == TerminalTool::NAME {
805 (
806 extract_terminal_pattern(value),
807 extract_terminal_pattern_display(value),
808 )
809 } else if tool_name == CopyPathTool::NAME
810 || tool_name == MovePathTool::NAME
811 || tool_name == EditFileTool::NAME
812 || tool_name == DeletePathTool::NAME
813 || tool_name == CreateDirectoryTool::NAME
814 || tool_name == SaveFileTool::NAME
815 {
816 (
817 extract_path_pattern(value),
818 extract_path_pattern_display(value),
819 )
820 } else if tool_name == FetchTool::NAME {
821 (
822 extract_url_pattern(value),
823 extract_url_pattern_display(value),
824 )
825 } else {
826 (None, None)
827 }
828 };
829
830 // Extract patterns from all input values. Only offer a pattern-specific
831 // "always allow/deny" button when every value produces the same pattern.
832 let (pattern, pattern_display) = match input_values.as_slice() {
833 [single] => extract_for_value(single),
834 _ => {
835 let mut iter = input_values.iter().map(|v| extract_for_value(v));
836 match iter.next() {
837 Some(first) => {
838 if iter.all(|pair| pair.0 == first.0) {
839 first
840 } else {
841 (None, None)
842 }
843 }
844 None => (None, None),
845 }
846 }
847 };
848
849 let mut choices = Vec::new();
850
851 let mut push_choice =
852 |label: String, allow_id, deny_id, allow_kind, deny_kind, sub_patterns: Vec<String>| {
853 choices.push(acp_thread::PermissionOptionChoice {
854 allow: acp::PermissionOption::new(
855 acp::PermissionOptionId::new(allow_id),
856 label.clone(),
857 allow_kind,
858 ),
859 deny: acp::PermissionOption::new(
860 acp::PermissionOptionId::new(deny_id),
861 label,
862 deny_kind,
863 ),
864 sub_patterns,
865 });
866 };
867
868 if shell_supports_always_allow {
869 push_choice(
870 format!("Always for {}", tool_name.replace('_', " ")),
871 format!("always_allow:{}", tool_name),
872 format!("always_deny:{}", tool_name),
873 acp::PermissionOptionKind::AllowAlways,
874 acp::PermissionOptionKind::RejectAlways,
875 vec![],
876 );
877
878 if let (Some(pattern), Some(display)) = (pattern, pattern_display) {
879 let button_text = if tool_name == TerminalTool::NAME {
880 format!("Always for `{}` commands", display)
881 } else {
882 format!("Always for `{}`", display)
883 };
884 push_choice(
885 button_text,
886 format!("always_allow:{}", tool_name),
887 format!("always_deny:{}", tool_name),
888 acp::PermissionOptionKind::AllowAlways,
889 acp::PermissionOptionKind::RejectAlways,
890 vec![pattern],
891 );
892 }
893 }
894
895 push_choice(
896 "Only this time".to_string(),
897 "allow".to_string(),
898 "deny".to_string(),
899 acp::PermissionOptionKind::AllowOnce,
900 acp::PermissionOptionKind::RejectOnce,
901 vec![],
902 );
903
904 acp_thread::PermissionOptions::Dropdown(choices)
905 }
906}
907
908#[derive(Debug)]
909pub struct ToolCallAuthorization {
910 pub tool_call: acp::ToolCallUpdate,
911 pub options: acp_thread::PermissionOptions,
912 pub response: oneshot::Sender<acp_thread::SelectedPermissionOutcome>,
913 pub context: Option<ToolPermissionContext>,
914}
915
916#[derive(Debug, thiserror::Error)]
917enum CompletionError {
918 #[error("max tokens")]
919 MaxTokens,
920 #[error("refusal")]
921 Refusal,
922 #[error(transparent)]
923 Other(#[from] anyhow::Error),
924}
925
926pub struct Thread {
927 id: acp::SessionId,
928 prompt_id: PromptId,
929 updated_at: DateTime<Utc>,
930 title: Option<SharedString>,
931 pending_title_generation: Option<Task<()>>,
932 pending_summary_generation: Option<Shared<Task<Option<SharedString>>>>,
933 summary: Option<SharedString>,
934 messages: Vec<Message>,
935 user_store: Entity<UserStore>,
936 /// Holds the task that handles agent interaction until the end of the turn.
937 /// Survives across multiple requests as the model performs tool calls and
938 /// we run tools, report their results.
939 running_turn: Option<RunningTurn>,
940 /// Flag indicating the UI has a queued message waiting to be sent.
941 /// Used to signal that the turn should end at the next message boundary.
942 has_queued_message: bool,
943 pending_message: Option<AgentMessage>,
944 pub(crate) tools: BTreeMap<SharedString, Arc<dyn AnyAgentTool>>,
945 request_token_usage: HashMap<UserMessageId, language_model::TokenUsage>,
946 #[allow(unused)]
947 cumulative_token_usage: TokenUsage,
948 #[allow(unused)]
949 initial_project_snapshot: Shared<Task<Option<Arc<ProjectSnapshot>>>>,
950 pub(crate) context_server_registry: Entity<ContextServerRegistry>,
951 profile_id: AgentProfileId,
952 project_context: Entity<ProjectContext>,
953 pub(crate) templates: Arc<Templates>,
954 /// Formatted available skills for the system prompt.
955 available_skills: Entity<SkillsContext>,
956 model: Option<Arc<dyn LanguageModel>>,
957 summarization_model: Option<Arc<dyn LanguageModel>>,
958 thinking_enabled: bool,
959 thinking_effort: Option<String>,
960 speed: Option<Speed>,
961 prompt_capabilities_tx: watch::Sender<acp::PromptCapabilities>,
962 pub(crate) prompt_capabilities_rx: watch::Receiver<acp::PromptCapabilities>,
963 pub(crate) project: Entity<Project>,
964 pub(crate) action_log: Entity<ActionLog>,
965 /// True if this thread was imported from a shared thread and can be synced.
966 imported: bool,
967 /// If this is a subagent thread, contains context about the parent
968 subagent_context: Option<SubagentContext>,
969 /// The user's unsent prompt text, persisted so it can be restored when reloading the thread.
970 draft_prompt: Option<Vec<acp::ContentBlock>>,
971 ui_scroll_position: Option<gpui::ListOffset>,
972 /// Weak references to running subagent threads for cancellation propagation
973 running_subagents: Vec<WeakEntity<Thread>>,
974}
975
976impl Thread {
977 fn prompt_capabilities(model: Option<&dyn LanguageModel>) -> acp::PromptCapabilities {
978 let image = model.map_or(true, |model| model.supports_images());
979 acp::PromptCapabilities::new()
980 .image(image)
981 .embedded_context(true)
982 }
983
984 pub fn new_subagent(parent_thread: &Entity<Thread>, cx: &mut Context<Self>) -> Self {
985 let project = parent_thread.read(cx).project.clone();
986 let project_context = parent_thread.read(cx).project_context.clone();
987 let context_server_registry = parent_thread.read(cx).context_server_registry.clone();
988 let templates = parent_thread.read(cx).templates.clone();
989 let model = parent_thread.read(cx).model().cloned();
990 let parent_action_log = parent_thread.read(cx).action_log().clone();
991 let action_log =
992 cx.new(|_cx| ActionLog::new(project.clone()).with_linked_action_log(parent_action_log));
993 let mut thread = Self::new_internal(
994 project,
995 project_context,
996 context_server_registry,
997 templates,
998 model,
999 action_log,
1000 cx,
1001 );
1002 thread.subagent_context = Some(SubagentContext {
1003 parent_thread_id: parent_thread.read(cx).id().clone(),
1004 depth: parent_thread.read(cx).depth() + 1,
1005 });
1006 thread
1007 }
1008
1009 pub fn new(
1010 project: Entity<Project>,
1011 project_context: Entity<ProjectContext>,
1012 context_server_registry: Entity<ContextServerRegistry>,
1013 templates: Arc<Templates>,
1014 model: Option<Arc<dyn LanguageModel>>,
1015 cx: &mut Context<Self>,
1016 ) -> Self {
1017 Self::new_internal(
1018 project.clone(),
1019 project_context,
1020 context_server_registry,
1021 templates,
1022 model,
1023 cx.new(|_cx| ActionLog::new(project)),
1024 cx,
1025 )
1026 }
1027
1028 fn new_internal(
1029 project: Entity<Project>,
1030 project_context: Entity<ProjectContext>,
1031 context_server_registry: Entity<ContextServerRegistry>,
1032 templates: Arc<Templates>,
1033 model: Option<Arc<dyn LanguageModel>>,
1034 action_log: Entity<ActionLog>,
1035 cx: &mut Context<Self>,
1036 ) -> Self {
1037 let settings = AgentSettings::get_global(cx);
1038 let profile_id = settings.default_profile.clone();
1039 let enable_thinking = settings
1040 .default_model
1041 .as_ref()
1042 .is_some_and(|model| model.enable_thinking);
1043 let thinking_effort = settings
1044 .default_model
1045 .as_ref()
1046 .and_then(|model| model.effort.clone());
1047 let (prompt_capabilities_tx, prompt_capabilities_rx) =
1048 watch::channel(Self::prompt_capabilities(model.as_deref()));
1049 let worktree_roots: Vec<std::path::PathBuf> = project
1050 .read(cx)
1051 .visible_worktrees(cx)
1052 .map(|worktree| worktree.read(cx).abs_path().as_ref().to_path_buf())
1053 .collect();
1054 let available_skills = SkillsContext::new(worktree_roots, templates.clone(), cx);
1055 Self {
1056 id: acp::SessionId::new(uuid::Uuid::new_v4().to_string()),
1057 prompt_id: PromptId::new(),
1058 updated_at: Utc::now(),
1059 title: None,
1060 pending_title_generation: None,
1061 pending_summary_generation: None,
1062 summary: None,
1063 messages: Vec::new(),
1064 user_store: project.read(cx).user_store(),
1065 running_turn: None,
1066 has_queued_message: false,
1067 pending_message: None,
1068 tools: BTreeMap::default(),
1069 request_token_usage: HashMap::default(),
1070 cumulative_token_usage: TokenUsage::default(),
1071 initial_project_snapshot: {
1072 let project_snapshot = Self::project_snapshot(project.clone(), cx);
1073 cx.foreground_executor()
1074 .spawn(async move { Some(project_snapshot.await) })
1075 .shared()
1076 },
1077 context_server_registry,
1078 profile_id,
1079 project_context,
1080 templates,
1081 available_skills,
1082 model,
1083 summarization_model: None,
1084 thinking_enabled: enable_thinking,
1085 speed: None,
1086 thinking_effort,
1087 prompt_capabilities_tx,
1088 prompt_capabilities_rx,
1089 project,
1090 action_log,
1091 imported: false,
1092 subagent_context: None,
1093 draft_prompt: None,
1094 ui_scroll_position: None,
1095 running_subagents: Vec::new(),
1096 }
1097 }
1098
1099 pub fn id(&self) -> &acp::SessionId {
1100 &self.id
1101 }
1102
1103 /// Returns true if this thread was imported from a shared thread.
1104 pub fn is_imported(&self) -> bool {
1105 self.imported
1106 }
1107
1108 pub fn replay(
1109 &mut self,
1110 cx: &mut Context<Self>,
1111 ) -> mpsc::UnboundedReceiver<Result<ThreadEvent>> {
1112 let (tx, rx) = mpsc::unbounded();
1113 let stream = ThreadEventStream(tx);
1114 for message in &self.messages {
1115 match message {
1116 Message::User(user_message) => stream.send_user_message(user_message),
1117 Message::Agent(assistant_message) => {
1118 for content in &assistant_message.content {
1119 match content {
1120 AgentMessageContent::Text(text) => stream.send_text(text),
1121 AgentMessageContent::Thinking { text, .. } => {
1122 stream.send_thinking(text)
1123 }
1124 AgentMessageContent::RedactedThinking(_) => {}
1125 AgentMessageContent::ToolUse(tool_use) => {
1126 self.replay_tool_call(
1127 tool_use,
1128 assistant_message.tool_results.get(&tool_use.id),
1129 &stream,
1130 cx,
1131 );
1132 }
1133 }
1134 }
1135 }
1136 Message::Resume => {}
1137 }
1138 }
1139 rx
1140 }
1141
1142 fn replay_tool_call(
1143 &self,
1144 tool_use: &LanguageModelToolUse,
1145 tool_result: Option<&LanguageModelToolResult>,
1146 stream: &ThreadEventStream,
1147 cx: &mut Context<Self>,
1148 ) {
1149 // Extract saved output and status first, so they're available even if tool is not found
1150 let output = tool_result
1151 .as_ref()
1152 .and_then(|result| result.output.clone());
1153 let status = tool_result
1154 .as_ref()
1155 .map_or(acp::ToolCallStatus::Failed, |result| {
1156 if result.is_error {
1157 acp::ToolCallStatus::Failed
1158 } else {
1159 acp::ToolCallStatus::Completed
1160 }
1161 });
1162
1163 let tool = self.tools.get(tool_use.name.as_ref()).cloned().or_else(|| {
1164 self.context_server_registry
1165 .read(cx)
1166 .servers()
1167 .find_map(|(_, tools)| {
1168 if let Some(tool) = tools.get(tool_use.name.as_ref()) {
1169 Some(tool.clone())
1170 } else {
1171 None
1172 }
1173 })
1174 });
1175
1176 let Some(tool) = tool else {
1177 // Tool not found (e.g., MCP server not connected after restart),
1178 // but still display the saved result if available.
1179 // We need to send both ToolCall and ToolCallUpdate events because the UI
1180 // only converts raw_output to displayable content in update_fields, not from_acp.
1181 stream
1182 .0
1183 .unbounded_send(Ok(ThreadEvent::ToolCall(
1184 acp::ToolCall::new(tool_use.id.to_string(), tool_use.name.to_string())
1185 .status(status)
1186 .raw_input(tool_use.input.clone()),
1187 )))
1188 .ok();
1189 stream.update_tool_call_fields(
1190 &tool_use.id,
1191 acp::ToolCallUpdateFields::new()
1192 .status(status)
1193 .raw_output(output),
1194 None,
1195 );
1196 return;
1197 };
1198
1199 let title = tool.initial_title(tool_use.input.clone(), cx);
1200 let kind = tool.kind();
1201 stream.send_tool_call(
1202 &tool_use.id,
1203 &tool_use.name,
1204 title,
1205 kind,
1206 tool_use.input.clone(),
1207 );
1208
1209 if let Some(output) = output.clone() {
1210 // For replay, we use a dummy cancellation receiver since the tool already completed
1211 let (_cancellation_tx, cancellation_rx) = watch::channel(false);
1212 let tool_event_stream = ToolCallEventStream::new(
1213 tool_use.id.clone(),
1214 stream.clone(),
1215 Some(self.project.read(cx).fs().clone()),
1216 cancellation_rx,
1217 );
1218 tool.replay(tool_use.input.clone(), output, tool_event_stream, cx)
1219 .log_err();
1220 }
1221
1222 stream.update_tool_call_fields(
1223 &tool_use.id,
1224 acp::ToolCallUpdateFields::new()
1225 .status(status)
1226 .raw_output(output),
1227 None,
1228 );
1229 }
1230
1231 pub fn from_db(
1232 id: acp::SessionId,
1233 db_thread: DbThread,
1234 project: Entity<Project>,
1235 project_context: Entity<ProjectContext>,
1236 context_server_registry: Entity<ContextServerRegistry>,
1237 templates: Arc<Templates>,
1238 cx: &mut Context<Self>,
1239 ) -> Self {
1240 let settings = AgentSettings::get_global(cx);
1241 let profile_id = db_thread
1242 .profile
1243 .unwrap_or_else(|| settings.default_profile.clone());
1244
1245 let mut model = LanguageModelRegistry::global(cx).update(cx, |registry, cx| {
1246 db_thread
1247 .model
1248 .and_then(|model| {
1249 let model = SelectedModel {
1250 provider: model.provider.clone().into(),
1251 model: model.model.into(),
1252 };
1253 registry.select_model(&model, cx)
1254 })
1255 .or_else(|| registry.default_model())
1256 .map(|model| model.model)
1257 });
1258
1259 if model.is_none() {
1260 model = Self::resolve_profile_model(&profile_id, cx);
1261 }
1262 if model.is_none() {
1263 model = LanguageModelRegistry::global(cx).update(cx, |registry, _cx| {
1264 registry.default_model().map(|model| model.model)
1265 });
1266 }
1267
1268 let (prompt_capabilities_tx, prompt_capabilities_rx) =
1269 watch::channel(Self::prompt_capabilities(model.as_deref()));
1270
1271 let action_log = cx.new(|_| ActionLog::new(project.clone()));
1272 let worktree_roots: Vec<std::path::PathBuf> = project
1273 .read(cx)
1274 .visible_worktrees(cx)
1275 .map(|worktree| worktree.read(cx).abs_path().as_ref().to_path_buf())
1276 .collect();
1277 let available_skills = SkillsContext::new(worktree_roots, templates.clone(), cx);
1278
1279 Self {
1280 id,
1281 prompt_id: PromptId::new(),
1282 title: if db_thread.title.is_empty() {
1283 None
1284 } else {
1285 Some(db_thread.title.clone())
1286 },
1287 pending_title_generation: None,
1288 pending_summary_generation: None,
1289 summary: db_thread.detailed_summary,
1290 messages: db_thread.messages,
1291 user_store: project.read(cx).user_store(),
1292 running_turn: None,
1293 has_queued_message: false,
1294 pending_message: None,
1295 tools: BTreeMap::default(),
1296 request_token_usage: db_thread.request_token_usage.clone(),
1297 cumulative_token_usage: db_thread.cumulative_token_usage,
1298 initial_project_snapshot: Task::ready(db_thread.initial_project_snapshot).shared(),
1299 context_server_registry,
1300 profile_id,
1301 project_context,
1302 templates,
1303 available_skills,
1304 model,
1305 summarization_model: None,
1306 thinking_enabled: db_thread.thinking_enabled,
1307 thinking_effort: db_thread.thinking_effort,
1308 speed: db_thread.speed,
1309 project,
1310 action_log,
1311 updated_at: db_thread.updated_at,
1312 prompt_capabilities_tx,
1313 prompt_capabilities_rx,
1314 imported: db_thread.imported,
1315 subagent_context: db_thread.subagent_context,
1316 draft_prompt: db_thread.draft_prompt,
1317 ui_scroll_position: db_thread.ui_scroll_position.map(|sp| gpui::ListOffset {
1318 item_ix: sp.item_ix,
1319 offset_in_item: gpui::px(sp.offset_in_item),
1320 }),
1321 running_subagents: Vec::new(),
1322 }
1323 }
1324
1325 pub fn to_db(&self, cx: &App) -> Task<DbThread> {
1326 let initial_project_snapshot = self.initial_project_snapshot.clone();
1327 let mut thread = DbThread {
1328 title: self.title().unwrap_or_default(),
1329 messages: self.messages.clone(),
1330 updated_at: self.updated_at,
1331 detailed_summary: self.summary.clone(),
1332 initial_project_snapshot: None,
1333 cumulative_token_usage: self.cumulative_token_usage,
1334 request_token_usage: self.request_token_usage.clone(),
1335 model: self.model.as_ref().map(|model| DbLanguageModel {
1336 provider: model.provider_id().to_string(),
1337 model: model.id().0.to_string(),
1338 }),
1339 profile: Some(self.profile_id.clone()),
1340 imported: self.imported,
1341 subagent_context: self.subagent_context.clone(),
1342 speed: self.speed,
1343 thinking_enabled: self.thinking_enabled,
1344 thinking_effort: self.thinking_effort.clone(),
1345 draft_prompt: self.draft_prompt.clone(),
1346 ui_scroll_position: self.ui_scroll_position.map(|lo| {
1347 crate::db::SerializedScrollPosition {
1348 item_ix: lo.item_ix,
1349 offset_in_item: lo.offset_in_item.as_f32(),
1350 }
1351 }),
1352 };
1353
1354 cx.background_spawn(async move {
1355 let initial_project_snapshot = initial_project_snapshot.await;
1356 thread.initial_project_snapshot = initial_project_snapshot;
1357 thread
1358 })
1359 }
1360
1361 /// Create a snapshot of the current project state including git information and unsaved buffers.
1362 fn project_snapshot(
1363 project: Entity<Project>,
1364 cx: &mut Context<Self>,
1365 ) -> Task<Arc<ProjectSnapshot>> {
1366 let task = project::telemetry_snapshot::TelemetrySnapshot::new(&project, cx);
1367 cx.spawn(async move |_, _| {
1368 let snapshot = task.await;
1369
1370 Arc::new(ProjectSnapshot {
1371 worktree_snapshots: snapshot.worktree_snapshots,
1372 timestamp: Utc::now(),
1373 })
1374 })
1375 }
1376
1377 pub fn project_context(&self) -> &Entity<ProjectContext> {
1378 &self.project_context
1379 }
1380
1381 pub fn project(&self) -> &Entity<Project> {
1382 &self.project
1383 }
1384
1385 pub fn action_log(&self) -> &Entity<ActionLog> {
1386 &self.action_log
1387 }
1388
1389 pub fn is_empty(&self) -> bool {
1390 self.messages.is_empty() && self.title.is_none()
1391 }
1392
1393 pub fn draft_prompt(&self) -> Option<&[acp::ContentBlock]> {
1394 self.draft_prompt.as_deref()
1395 }
1396
1397 pub fn set_draft_prompt(&mut self, prompt: Option<Vec<acp::ContentBlock>>) {
1398 self.draft_prompt = prompt;
1399 }
1400
1401 pub fn ui_scroll_position(&self) -> Option<gpui::ListOffset> {
1402 self.ui_scroll_position
1403 }
1404
1405 pub fn set_ui_scroll_position(&mut self, position: Option<gpui::ListOffset>) {
1406 self.ui_scroll_position = position;
1407 }
1408
1409 pub fn model(&self) -> Option<&Arc<dyn LanguageModel>> {
1410 self.model.as_ref()
1411 }
1412
1413 pub fn set_model(&mut self, model: Arc<dyn LanguageModel>, cx: &mut Context<Self>) {
1414 let old_usage = self.latest_token_usage();
1415 self.model = Some(model.clone());
1416 let new_caps = Self::prompt_capabilities(self.model.as_deref());
1417 let new_usage = self.latest_token_usage();
1418 if old_usage != new_usage {
1419 cx.emit(TokenUsageUpdated(new_usage));
1420 }
1421 self.prompt_capabilities_tx.send(new_caps).log_err();
1422
1423 for subagent in &self.running_subagents {
1424 subagent
1425 .update(cx, |thread, cx| thread.set_model(model.clone(), cx))
1426 .ok();
1427 }
1428
1429 cx.notify()
1430 }
1431
1432 pub fn summarization_model(&self) -> Option<&Arc<dyn LanguageModel>> {
1433 self.summarization_model.as_ref()
1434 }
1435
1436 pub fn set_summarization_model(
1437 &mut self,
1438 model: Option<Arc<dyn LanguageModel>>,
1439 cx: &mut Context<Self>,
1440 ) {
1441 self.summarization_model = model.clone();
1442
1443 for subagent in &self.running_subagents {
1444 subagent
1445 .update(cx, |thread, cx| {
1446 thread.set_summarization_model(model.clone(), cx)
1447 })
1448 .ok();
1449 }
1450 cx.notify()
1451 }
1452
1453 pub fn thinking_enabled(&self) -> bool {
1454 self.thinking_enabled
1455 }
1456
1457 pub fn set_thinking_enabled(&mut self, enabled: bool, cx: &mut Context<Self>) {
1458 self.thinking_enabled = enabled;
1459
1460 for subagent in &self.running_subagents {
1461 subagent
1462 .update(cx, |thread, cx| thread.set_thinking_enabled(enabled, cx))
1463 .ok();
1464 }
1465 cx.notify();
1466 }
1467
1468 pub fn thinking_effort(&self) -> Option<&String> {
1469 self.thinking_effort.as_ref()
1470 }
1471
1472 pub fn set_thinking_effort(&mut self, effort: Option<String>, cx: &mut Context<Self>) {
1473 self.thinking_effort = effort.clone();
1474
1475 for subagent in &self.running_subagents {
1476 subagent
1477 .update(cx, |thread, cx| {
1478 thread.set_thinking_effort(effort.clone(), cx)
1479 })
1480 .ok();
1481 }
1482 cx.notify();
1483 }
1484
1485 pub fn speed(&self) -> Option<Speed> {
1486 self.speed
1487 }
1488
1489 pub fn set_speed(&mut self, speed: Speed, cx: &mut Context<Self>) {
1490 self.speed = Some(speed);
1491
1492 for subagent in &self.running_subagents {
1493 subagent
1494 .update(cx, |thread, cx| thread.set_speed(speed, cx))
1495 .ok();
1496 }
1497 cx.notify();
1498 }
1499
1500 pub fn last_message(&self) -> Option<&Message> {
1501 self.messages.last()
1502 }
1503
1504 #[cfg(any(test, feature = "test-support"))]
1505 pub fn last_received_or_pending_message(&self) -> Option<Message> {
1506 if let Some(message) = self.pending_message.clone() {
1507 Some(Message::Agent(message))
1508 } else {
1509 self.messages.last().cloned()
1510 }
1511 }
1512
1513 pub fn add_default_tools(
1514 &mut self,
1515 environment: Rc<dyn ThreadEnvironment>,
1516 cx: &mut Context<Self>,
1517 ) {
1518 // Only update the agent location for the root thread, not for subagents.
1519 let update_agent_location = self.parent_thread_id().is_none();
1520
1521 let language_registry = self.project.read(cx).languages().clone();
1522 self.add_tool(CopyPathTool::new(self.project.clone()));
1523 self.add_tool(CreateDirectoryTool::new(self.project.clone()));
1524 self.add_tool(DeletePathTool::new(
1525 self.project.clone(),
1526 self.action_log.clone(),
1527 ));
1528 self.add_tool(DiagnosticsTool::new(self.project.clone()));
1529 self.add_tool(EditFileTool::new(
1530 self.project.clone(),
1531 cx.weak_entity(),
1532 language_registry.clone(),
1533 Templates::new(),
1534 ));
1535 self.add_tool(StreamingEditFileTool::new(
1536 self.project.clone(),
1537 cx.weak_entity(),
1538 self.action_log.clone(),
1539 language_registry,
1540 ));
1541 self.add_tool(FetchTool::new(self.project.read(cx).client().http_client()));
1542 self.add_tool(FindPathTool::new(self.project.clone()));
1543 self.add_tool(GrepTool::new(self.project.clone()));
1544 self.add_tool(ListDirectoryTool::new(self.project.clone()));
1545 self.add_tool(MovePathTool::new(self.project.clone()));
1546 self.add_tool(NowTool);
1547 self.add_tool(OpenTool::new(self.project.clone()));
1548 if cx.has_flag::<UpdatePlanToolFeatureFlag>() {
1549 self.add_tool(UpdatePlanTool);
1550 }
1551 self.add_tool(ReadFileTool::new(
1552 self.project.clone(),
1553 self.action_log.clone(),
1554 update_agent_location,
1555 ));
1556 self.add_tool(SaveFileTool::new(self.project.clone()));
1557 if cx.has_flag::<AgentSkillsFeatureFlag>() {
1558 self.add_tool(SkillTool::new(self.project.clone()));
1559 }
1560 self.add_tool(RestoreFileFromDiskTool::new(self.project.clone()));
1561 self.add_tool(TerminalTool::new(self.project.clone(), environment.clone()));
1562 self.add_tool(WebSearchTool);
1563
1564 if self.depth() < MAX_SUBAGENT_DEPTH {
1565 self.add_tool(SpawnAgentTool::new(environment));
1566 }
1567 }
1568
1569 pub fn add_tool<T: AgentTool>(&mut self, tool: T) {
1570 debug_assert!(
1571 !self.tools.contains_key(T::NAME),
1572 "Duplicate tool name: {}",
1573 T::NAME,
1574 );
1575 self.tools.insert(T::NAME.into(), tool.erase());
1576 }
1577
1578 #[cfg(any(test, feature = "test-support"))]
1579 pub fn remove_tool(&mut self, name: &str) -> bool {
1580 self.tools.remove(name).is_some()
1581 }
1582
1583 pub fn profile(&self) -> &AgentProfileId {
1584 &self.profile_id
1585 }
1586
1587 pub fn set_profile(&mut self, profile_id: AgentProfileId, cx: &mut Context<Self>) {
1588 if self.profile_id == profile_id {
1589 return;
1590 }
1591
1592 self.profile_id = profile_id.clone();
1593
1594 // Swap to the profile's preferred model when available.
1595 if let Some(model) = Self::resolve_profile_model(&self.profile_id, cx) {
1596 self.set_model(model, cx);
1597 }
1598
1599 for subagent in &self.running_subagents {
1600 subagent
1601 .update(cx, |thread, cx| thread.set_profile(profile_id.clone(), cx))
1602 .ok();
1603 }
1604 }
1605
1606 pub fn cancel(&mut self, cx: &mut Context<Self>) -> Task<()> {
1607 for subagent in self.running_subagents.drain(..) {
1608 if let Some(subagent) = subagent.upgrade() {
1609 subagent.update(cx, |thread, cx| thread.cancel(cx)).detach();
1610 }
1611 }
1612
1613 let Some(running_turn) = self.running_turn.take() else {
1614 self.flush_pending_message(cx);
1615 return Task::ready(());
1616 };
1617
1618 let turn_task = running_turn.cancel();
1619
1620 cx.spawn(async move |this, cx| {
1621 turn_task.await;
1622 this.update(cx, |this, cx| {
1623 this.flush_pending_message(cx);
1624 })
1625 .ok();
1626 })
1627 }
1628
1629 pub fn set_has_queued_message(&mut self, has_queued: bool) {
1630 self.has_queued_message = has_queued;
1631 }
1632
1633 pub fn has_queued_message(&self) -> bool {
1634 self.has_queued_message
1635 }
1636
1637 fn update_token_usage(&mut self, update: language_model::TokenUsage, cx: &mut Context<Self>) {
1638 let Some(last_user_message) = self.last_user_message() else {
1639 return;
1640 };
1641
1642 self.request_token_usage
1643 .insert(last_user_message.id.clone(), update);
1644 cx.emit(TokenUsageUpdated(self.latest_token_usage()));
1645 cx.notify();
1646 }
1647
1648 pub fn truncate(&mut self, message_id: UserMessageId, cx: &mut Context<Self>) -> Result<()> {
1649 self.cancel(cx).detach();
1650 // Clear pending message since cancel will try to flush it asynchronously,
1651 // and we don't want that content to be added after we truncate
1652 self.pending_message.take();
1653 let Some(position) = self.messages.iter().position(
1654 |msg| matches!(msg, Message::User(UserMessage { id, .. }) if id == &message_id),
1655 ) else {
1656 return Err(anyhow!("Message not found"));
1657 };
1658
1659 for message in self.messages.drain(position..) {
1660 match message {
1661 Message::User(message) => {
1662 self.request_token_usage.remove(&message.id);
1663 }
1664 Message::Agent(_) | Message::Resume => {}
1665 }
1666 }
1667 self.clear_summary();
1668 cx.notify();
1669 Ok(())
1670 }
1671
1672 pub fn latest_request_token_usage(&self) -> Option<language_model::TokenUsage> {
1673 let last_user_message = self.last_user_message()?;
1674 let tokens = self.request_token_usage.get(&last_user_message.id)?;
1675 Some(*tokens)
1676 }
1677
1678 pub fn latest_token_usage(&self) -> Option<acp_thread::TokenUsage> {
1679 let usage = self.latest_request_token_usage()?;
1680 let model = self.model.clone()?;
1681 Some(acp_thread::TokenUsage {
1682 max_tokens: model.max_token_count(),
1683 max_output_tokens: model.max_output_tokens(),
1684 used_tokens: usage.total_tokens(),
1685 input_tokens: usage.input_tokens,
1686 output_tokens: usage.output_tokens,
1687 })
1688 }
1689
1690 /// Get the total input token count as of the message before the given message.
1691 ///
1692 /// Returns `None` if:
1693 /// - `target_id` is the first message (no previous message)
1694 /// - The previous message hasn't received a response yet (no usage data)
1695 /// - `target_id` is not found in the messages
1696 pub fn tokens_before_message(&self, target_id: &UserMessageId) -> Option<u64> {
1697 let mut previous_user_message_id: Option<&UserMessageId> = None;
1698
1699 for message in &self.messages {
1700 if let Message::User(user_msg) = message {
1701 if &user_msg.id == target_id {
1702 let prev_id = previous_user_message_id?;
1703 let usage = self.request_token_usage.get(prev_id)?;
1704 return Some(usage.input_tokens);
1705 }
1706 previous_user_message_id = Some(&user_msg.id);
1707 }
1708 }
1709 None
1710 }
1711
1712 /// Look up the active profile and resolve its preferred model if one is configured.
1713 fn resolve_profile_model(
1714 profile_id: &AgentProfileId,
1715 cx: &mut Context<Self>,
1716 ) -> Option<Arc<dyn LanguageModel>> {
1717 let selection = AgentSettings::get_global(cx)
1718 .profiles
1719 .get(profile_id)?
1720 .default_model
1721 .clone()?;
1722 Self::resolve_model_from_selection(&selection, cx)
1723 }
1724
1725 /// Translate a stored model selection into the configured model from the registry.
1726 fn resolve_model_from_selection(
1727 selection: &LanguageModelSelection,
1728 cx: &mut Context<Self>,
1729 ) -> Option<Arc<dyn LanguageModel>> {
1730 let selected = SelectedModel {
1731 provider: LanguageModelProviderId::from(selection.provider.0.clone()),
1732 model: LanguageModelId::from(selection.model.clone()),
1733 };
1734 LanguageModelRegistry::global(cx).update(cx, |registry, cx| {
1735 registry
1736 .select_model(&selected, cx)
1737 .map(|configured| configured.model)
1738 })
1739 }
1740
1741 pub fn resume(
1742 &mut self,
1743 cx: &mut Context<Self>,
1744 ) -> Result<mpsc::UnboundedReceiver<Result<ThreadEvent>>> {
1745 self.messages.push(Message::Resume);
1746 cx.notify();
1747
1748 log::debug!("Total messages in thread: {}", self.messages.len());
1749 self.run_turn(cx)
1750 }
1751
1752 /// Sending a message results in the model streaming a response, which could include tool calls.
1753 /// After calling tools, the model will stops and waits for any outstanding tool calls to be completed and their results sent.
1754 /// The returned channel will report all the occurrences in which the model stops before erroring or ending its turn.
1755 pub fn send<T>(
1756 &mut self,
1757 id: UserMessageId,
1758 content: impl IntoIterator<Item = T>,
1759 cx: &mut Context<Self>,
1760 ) -> Result<mpsc::UnboundedReceiver<Result<ThreadEvent>>>
1761 where
1762 T: Into<UserMessageContent>,
1763 {
1764 let content = content.into_iter().map(Into::into).collect::<Vec<_>>();
1765 log::debug!("Thread::send content: {:?}", content);
1766
1767 self.messages
1768 .push(Message::User(UserMessage { id, content }));
1769 cx.notify();
1770
1771 self.send_existing(cx)
1772 }
1773
1774 pub fn send_existing(
1775 &mut self,
1776 cx: &mut Context<Self>,
1777 ) -> Result<mpsc::UnboundedReceiver<Result<ThreadEvent>>> {
1778 let model = self.model().context("No language model configured")?;
1779
1780 log::info!("Thread::send called with model: {}", model.name().0);
1781 self.advance_prompt_id();
1782
1783 log::debug!("Total messages in thread: {}", self.messages.len());
1784 self.run_turn(cx)
1785 }
1786
1787 pub fn push_acp_user_block(
1788 &mut self,
1789 id: UserMessageId,
1790 blocks: impl IntoIterator<Item = acp::ContentBlock>,
1791 path_style: PathStyle,
1792 cx: &mut Context<Self>,
1793 ) {
1794 let content = blocks
1795 .into_iter()
1796 .map(|block| UserMessageContent::from_content_block(block, path_style))
1797 .collect::<Vec<_>>();
1798 self.messages
1799 .push(Message::User(UserMessage { id, content }));
1800 cx.notify();
1801 }
1802
1803 pub fn push_acp_agent_block(&mut self, block: acp::ContentBlock, cx: &mut Context<Self>) {
1804 let text = match block {
1805 acp::ContentBlock::Text(text_content) => text_content.text,
1806 acp::ContentBlock::Image(_) => "[image]".to_string(),
1807 acp::ContentBlock::Audio(_) => "[audio]".to_string(),
1808 acp::ContentBlock::ResourceLink(resource_link) => resource_link.uri,
1809 acp::ContentBlock::Resource(resource) => match resource.resource {
1810 acp::EmbeddedResourceResource::TextResourceContents(resource) => resource.uri,
1811 acp::EmbeddedResourceResource::BlobResourceContents(resource) => resource.uri,
1812 _ => "[resource]".to_string(),
1813 },
1814 _ => "[unknown]".to_string(),
1815 };
1816
1817 self.messages.push(Message::Agent(AgentMessage {
1818 content: vec![AgentMessageContent::Text(text)],
1819 ..Default::default()
1820 }));
1821 cx.notify();
1822 }
1823
1824 fn run_turn(
1825 &mut self,
1826 cx: &mut Context<Self>,
1827 ) -> Result<mpsc::UnboundedReceiver<Result<ThreadEvent>>> {
1828 // Flush the old pending message synchronously before cancelling,
1829 // to avoid a race where the detached cancel task might flush the NEW
1830 // turn's pending message instead of the old one.
1831 self.flush_pending_message(cx);
1832 self.cancel(cx).detach();
1833
1834 let (events_tx, events_rx) = mpsc::unbounded::<Result<ThreadEvent>>();
1835 let event_stream = ThreadEventStream(events_tx);
1836 let message_ix = self.messages.len().saturating_sub(1);
1837 self.clear_summary();
1838 let (cancellation_tx, mut cancellation_rx) = watch::channel(false);
1839 self.running_turn = Some(RunningTurn {
1840 event_stream: event_stream.clone(),
1841 tools: self.enabled_tools(cx),
1842 cancellation_tx,
1843 streaming_tool_inputs: HashMap::default(),
1844 _task: cx.spawn(async move |this, cx| {
1845 log::debug!("Starting agent turn execution");
1846
1847 let turn_result =
1848 Self::run_turn_internal(&this, &event_stream, cancellation_rx.clone(), cx)
1849 .await;
1850
1851 // Check if we were cancelled - if so, cancel() already took running_turn
1852 // and we shouldn't touch it (it might be a NEW turn now)
1853 let was_cancelled = *cancellation_rx.borrow();
1854 if was_cancelled {
1855 log::debug!("Turn was cancelled, skipping cleanup");
1856 return;
1857 }
1858
1859 _ = this.update(cx, |this, cx| this.flush_pending_message(cx));
1860
1861 match turn_result {
1862 Ok(()) => {
1863 log::debug!("Turn execution completed");
1864 event_stream.send_stop(acp::StopReason::EndTurn);
1865 }
1866 Err(error) => {
1867 log::error!("Turn execution failed: {:?}", error);
1868 match error.downcast::<CompletionError>() {
1869 Ok(CompletionError::Refusal) => {
1870 event_stream.send_stop(acp::StopReason::Refusal);
1871 _ = this.update(cx, |this, _| this.messages.truncate(message_ix));
1872 }
1873 Ok(CompletionError::MaxTokens) => {
1874 event_stream.send_stop(acp::StopReason::MaxTokens);
1875 }
1876 Ok(CompletionError::Other(error)) | Err(error) => {
1877 event_stream.send_error(error);
1878 }
1879 }
1880 }
1881 }
1882
1883 _ = this.update(cx, |this, _| this.running_turn.take());
1884 }),
1885 });
1886 Ok(events_rx)
1887 }
1888
1889 async fn run_turn_internal(
1890 this: &WeakEntity<Self>,
1891 event_stream: &ThreadEventStream,
1892 mut cancellation_rx: watch::Receiver<bool>,
1893 cx: &mut AsyncApp,
1894 ) -> Result<()> {
1895 let mut attempt = 0;
1896 let mut intent = CompletionIntent::UserPrompt;
1897 loop {
1898 // Re-read the model and refresh tools on each iteration so that
1899 // mid-turn changes (e.g. the user switches model, toggles tools,
1900 // or changes profile) take effect between tool-call rounds.
1901 let (model, request) = this.update(cx, |this, cx| {
1902 let model = this.model.clone().context("No language model configured")?;
1903 this.refresh_turn_tools(cx);
1904 let request = this.build_completion_request(intent, cx)?;
1905 anyhow::Ok((model, request))
1906 })??;
1907
1908 telemetry::event!(
1909 "Agent Thread Completion",
1910 thread_id = this.read_with(cx, |this, _| this.id.to_string())?,
1911 parent_thread_id = this.read_with(cx, |this, _| this
1912 .parent_thread_id()
1913 .map(|id| id.to_string()))?,
1914 prompt_id = this.read_with(cx, |this, _| this.prompt_id.to_string())?,
1915 model = model.telemetry_id(),
1916 model_provider = model.provider_id().to_string(),
1917 attempt
1918 );
1919
1920 log::debug!("Calling model.stream_completion, attempt {}", attempt);
1921
1922 let (mut events, mut error) = match model.stream_completion(request, cx).await {
1923 Ok(events) => (events.fuse(), None),
1924 Err(err) => (stream::empty().boxed().fuse(), Some(err)),
1925 };
1926 let mut tool_results: FuturesUnordered<Task<LanguageModelToolResult>> =
1927 FuturesUnordered::new();
1928 let mut early_tool_results: Vec<LanguageModelToolResult> = Vec::new();
1929 let mut cancelled = false;
1930 loop {
1931 // Race between getting the first event, tool completion, and cancellation.
1932 let first_event = futures::select! {
1933 event = events.next().fuse() => event,
1934 tool_result = futures::StreamExt::select_next_some(&mut tool_results) => {
1935 let is_error = tool_result.is_error;
1936 let is_still_streaming = this
1937 .read_with(cx, |this, _cx| {
1938 this.running_turn
1939 .as_ref()
1940 .and_then(|turn| turn.streaming_tool_inputs.get(&tool_result.tool_use_id))
1941 .map_or(false, |inputs| !inputs.has_received_final())
1942 })
1943 .unwrap_or(false);
1944
1945 early_tool_results.push(tool_result);
1946
1947 // Only break if the tool errored and we are still
1948 // streaming the input of the tool. If the tool errored
1949 // but we are no longer streaming its input (i.e. there
1950 // are parallel tool calls) we want to continue
1951 // processing those tool inputs.
1952 if is_error && is_still_streaming {
1953 break;
1954 }
1955 continue;
1956 }
1957 _ = cancellation_rx.changed().fuse() => {
1958 if *cancellation_rx.borrow() {
1959 cancelled = true;
1960 break;
1961 }
1962 continue;
1963 }
1964 };
1965 let Some(first_event) = first_event else {
1966 break;
1967 };
1968
1969 // Collect all immediately available events to process as a batch
1970 let mut batch = vec![first_event];
1971 while let Some(event) = events.next().now_or_never().flatten() {
1972 batch.push(event);
1973 }
1974
1975 // Process the batch in a single update
1976 let batch_result = this.update(cx, |this, cx| {
1977 let mut batch_tool_results = Vec::new();
1978 let mut batch_error = None;
1979
1980 for event in batch {
1981 log::trace!("Received completion event: {:?}", event);
1982 match event {
1983 Ok(event) => {
1984 match this.handle_completion_event(
1985 event,
1986 event_stream,
1987 cancellation_rx.clone(),
1988 cx,
1989 ) {
1990 Ok(Some(task)) => batch_tool_results.push(task),
1991 Ok(None) => {}
1992 Err(err) => {
1993 batch_error = Some(err);
1994 break;
1995 }
1996 }
1997 }
1998 Err(err) => {
1999 batch_error = Some(err.into());
2000 break;
2001 }
2002 }
2003 }
2004
2005 cx.notify();
2006 (batch_tool_results, batch_error)
2007 })?;
2008
2009 tool_results.extend(batch_result.0);
2010 if let Some(err) = batch_result.1 {
2011 error = Some(err.downcast()?);
2012 break;
2013 }
2014 }
2015
2016 // Drop the stream to release the rate limit permit before tool execution.
2017 // The stream holds a semaphore guard that limits concurrent requests.
2018 // Without this, the permit would be held during potentially long-running
2019 // tool execution, which could cause deadlocks when tools spawn subagents
2020 // that need their own permits.
2021 drop(events);
2022
2023 // Drop streaming tool input senders that never received their final input.
2024 // This prevents deadlock when the LLM stream ends (e.g. because of an error)
2025 // before sending a tool use with `is_input_complete: true`.
2026 this.update(cx, |this, _cx| {
2027 if let Some(running_turn) = this.running_turn.as_mut() {
2028 if running_turn.streaming_tool_inputs.is_empty() {
2029 return;
2030 }
2031 log::warn!("Dropping partial tool inputs because the stream ended");
2032 running_turn.streaming_tool_inputs.drain();
2033 }
2034 })?;
2035
2036 let end_turn = tool_results.is_empty() && early_tool_results.is_empty();
2037
2038 for tool_result in early_tool_results {
2039 Self::process_tool_result(this, event_stream, cx, tool_result)?;
2040 }
2041 while let Some(tool_result) = tool_results.next().await {
2042 Self::process_tool_result(this, event_stream, cx, tool_result)?;
2043 }
2044
2045 this.update(cx, |this, cx| {
2046 this.flush_pending_message(cx);
2047 if this.title.is_none() && this.pending_title_generation.is_none() {
2048 this.generate_title(cx);
2049 }
2050 })?;
2051
2052 if cancelled {
2053 log::debug!("Turn cancelled by user, exiting");
2054 return Ok(());
2055 }
2056
2057 if let Some(error) = error {
2058 attempt += 1;
2059 let retry = this.update(cx, |this, cx| {
2060 let user_store = this.user_store.read(cx);
2061 this.handle_completion_error(error, attempt, user_store.plan())
2062 })??;
2063 let timer = cx.background_executor().timer(retry.duration);
2064 event_stream.send_retry(retry);
2065 futures::select! {
2066 _ = timer.fuse() => {}
2067 _ = cancellation_rx.changed().fuse() => {
2068 if *cancellation_rx.borrow() {
2069 log::debug!("Turn cancelled during retry delay, exiting");
2070 return Ok(());
2071 }
2072 }
2073 }
2074 this.update(cx, |this, _cx| {
2075 if let Some(Message::Agent(message)) = this.messages.last() {
2076 if message.tool_results.is_empty() {
2077 intent = CompletionIntent::UserPrompt;
2078 this.messages.push(Message::Resume);
2079 }
2080 }
2081 })?;
2082 } else if end_turn {
2083 return Ok(());
2084 } else {
2085 let has_queued = this.update(cx, |this, _| this.has_queued_message())?;
2086 if has_queued {
2087 log::debug!("Queued message found, ending turn at message boundary");
2088 return Ok(());
2089 }
2090 intent = CompletionIntent::ToolResults;
2091 attempt = 0;
2092 }
2093 }
2094 }
2095
2096 fn process_tool_result(
2097 this: &WeakEntity<Thread>,
2098 event_stream: &ThreadEventStream,
2099 cx: &mut AsyncApp,
2100 tool_result: LanguageModelToolResult,
2101 ) -> Result<(), anyhow::Error> {
2102 log::debug!("Tool finished {:?}", tool_result);
2103
2104 event_stream.update_tool_call_fields(
2105 &tool_result.tool_use_id,
2106 acp::ToolCallUpdateFields::new()
2107 .status(if tool_result.is_error {
2108 acp::ToolCallStatus::Failed
2109 } else {
2110 acp::ToolCallStatus::Completed
2111 })
2112 .raw_output(tool_result.output.clone()),
2113 None,
2114 );
2115 this.update(cx, |this, _cx| {
2116 this.pending_message()
2117 .tool_results
2118 .insert(tool_result.tool_use_id.clone(), tool_result);
2119 })?;
2120 Ok(())
2121 }
2122
2123 fn handle_completion_error(
2124 &mut self,
2125 error: LanguageModelCompletionError,
2126 attempt: u8,
2127 plan: Option<Plan>,
2128 ) -> Result<acp_thread::RetryStatus> {
2129 let Some(model) = self.model.as_ref() else {
2130 return Err(anyhow!(error));
2131 };
2132
2133 let auto_retry = if model.provider_id() == ZED_CLOUD_PROVIDER_ID {
2134 plan.is_some()
2135 } else {
2136 true
2137 };
2138
2139 if !auto_retry {
2140 return Err(anyhow!(error));
2141 }
2142
2143 let Some(strategy) = Self::retry_strategy_for(&error) else {
2144 return Err(anyhow!(error));
2145 };
2146
2147 let max_attempts = match &strategy {
2148 RetryStrategy::ExponentialBackoff { max_attempts, .. } => *max_attempts,
2149 RetryStrategy::Fixed { max_attempts, .. } => *max_attempts,
2150 };
2151
2152 if attempt > max_attempts {
2153 return Err(anyhow!(error));
2154 }
2155
2156 let delay = match &strategy {
2157 RetryStrategy::ExponentialBackoff { initial_delay, .. } => {
2158 let delay_secs = initial_delay.as_secs() * 2u64.pow((attempt - 1) as u32);
2159 Duration::from_secs(delay_secs)
2160 }
2161 RetryStrategy::Fixed { delay, .. } => *delay,
2162 };
2163 log::debug!("Retry attempt {attempt} with delay {delay:?}");
2164
2165 Ok(acp_thread::RetryStatus {
2166 last_error: error.to_string().into(),
2167 attempt: attempt as usize,
2168 max_attempts: max_attempts as usize,
2169 started_at: Instant::now(),
2170 duration: delay,
2171 })
2172 }
2173
2174 /// A helper method that's called on every streamed completion event.
2175 /// Returns an optional tool result task, which the main agentic loop will
2176 /// send back to the model when it resolves.
2177 fn handle_completion_event(
2178 &mut self,
2179 event: LanguageModelCompletionEvent,
2180 event_stream: &ThreadEventStream,
2181 cancellation_rx: watch::Receiver<bool>,
2182 cx: &mut Context<Self>,
2183 ) -> Result<Option<Task<LanguageModelToolResult>>> {
2184 log::trace!("Handling streamed completion event: {:?}", event);
2185 use LanguageModelCompletionEvent::*;
2186
2187 match event {
2188 StartMessage { .. } => {
2189 self.flush_pending_message(cx);
2190 self.pending_message = Some(AgentMessage::default());
2191 }
2192 Text(new_text) => self.handle_text_event(new_text, event_stream),
2193 Thinking { text, signature } => {
2194 self.handle_thinking_event(text, signature, event_stream)
2195 }
2196 RedactedThinking { data } => self.handle_redacted_thinking_event(data),
2197 ReasoningDetails(details) => {
2198 let last_message = self.pending_message();
2199 // Store the last non-empty reasoning_details (overwrites earlier ones)
2200 // This ensures we keep the encrypted reasoning with signatures, not the early text reasoning
2201 if let serde_json::Value::Array(ref arr) = details {
2202 if !arr.is_empty() {
2203 last_message.reasoning_details = Some(details);
2204 }
2205 } else {
2206 last_message.reasoning_details = Some(details);
2207 }
2208 }
2209 ToolUse(tool_use) => {
2210 return Ok(self.handle_tool_use_event(tool_use, event_stream, cancellation_rx, cx));
2211 }
2212 ToolUseJsonParseError {
2213 id,
2214 tool_name,
2215 raw_input,
2216 json_parse_error,
2217 } => {
2218 return Ok(Some(Task::ready(
2219 self.handle_tool_use_json_parse_error_event(
2220 id,
2221 tool_name,
2222 raw_input,
2223 json_parse_error,
2224 event_stream,
2225 ),
2226 )));
2227 }
2228 UsageUpdate(usage) => {
2229 telemetry::event!(
2230 "Agent Thread Completion Usage Updated",
2231 thread_id = self.id.to_string(),
2232 parent_thread_id = self.parent_thread_id().map(|id| id.to_string()),
2233 prompt_id = self.prompt_id.to_string(),
2234 model = self.model.as_ref().map(|m| m.telemetry_id()),
2235 model_provider = self.model.as_ref().map(|m| m.provider_id().to_string()),
2236 input_tokens = usage.input_tokens,
2237 output_tokens = usage.output_tokens,
2238 cache_creation_input_tokens = usage.cache_creation_input_tokens,
2239 cache_read_input_tokens = usage.cache_read_input_tokens,
2240 );
2241 self.update_token_usage(usage, cx);
2242 }
2243 Stop(StopReason::Refusal) => return Err(CompletionError::Refusal.into()),
2244 Stop(StopReason::MaxTokens) => return Err(CompletionError::MaxTokens.into()),
2245 Stop(StopReason::ToolUse | StopReason::EndTurn) => {}
2246 Started | Queued { .. } => {}
2247 }
2248
2249 Ok(None)
2250 }
2251
2252 fn handle_text_event(&mut self, new_text: String, event_stream: &ThreadEventStream) {
2253 event_stream.send_text(&new_text);
2254
2255 let last_message = self.pending_message();
2256 if let Some(AgentMessageContent::Text(text)) = last_message.content.last_mut() {
2257 text.push_str(&new_text);
2258 } else {
2259 last_message
2260 .content
2261 .push(AgentMessageContent::Text(new_text));
2262 }
2263 }
2264
2265 fn handle_thinking_event(
2266 &mut self,
2267 new_text: String,
2268 new_signature: Option<String>,
2269 event_stream: &ThreadEventStream,
2270 ) {
2271 event_stream.send_thinking(&new_text);
2272
2273 let last_message = self.pending_message();
2274 if let Some(AgentMessageContent::Thinking { text, signature }) =
2275 last_message.content.last_mut()
2276 {
2277 text.push_str(&new_text);
2278 *signature = new_signature.or(signature.take());
2279 } else {
2280 last_message.content.push(AgentMessageContent::Thinking {
2281 text: new_text,
2282 signature: new_signature,
2283 });
2284 }
2285 }
2286
2287 fn handle_redacted_thinking_event(&mut self, data: String) {
2288 let last_message = self.pending_message();
2289 last_message
2290 .content
2291 .push(AgentMessageContent::RedactedThinking(data));
2292 }
2293
2294 fn handle_tool_use_event(
2295 &mut self,
2296 tool_use: LanguageModelToolUse,
2297 event_stream: &ThreadEventStream,
2298 cancellation_rx: watch::Receiver<bool>,
2299 cx: &mut Context<Self>,
2300 ) -> Option<Task<LanguageModelToolResult>> {
2301 cx.notify();
2302
2303 let tool = self.tool(tool_use.name.as_ref());
2304 let mut title = SharedString::from(&tool_use.name);
2305 let mut kind = acp::ToolKind::Other;
2306 if let Some(tool) = tool.as_ref() {
2307 title = tool.initial_title(tool_use.input.clone(), cx);
2308 kind = tool.kind();
2309 }
2310
2311 self.send_or_update_tool_use(&tool_use, title, kind, event_stream);
2312
2313 let Some(tool) = tool else {
2314 let content = format!("No tool named {} exists", tool_use.name);
2315 return Some(Task::ready(LanguageModelToolResult {
2316 content: LanguageModelToolResultContent::Text(Arc::from(content)),
2317 tool_use_id: tool_use.id,
2318 tool_name: tool_use.name,
2319 is_error: true,
2320 output: None,
2321 }));
2322 };
2323
2324 if !tool_use.is_input_complete {
2325 if tool.supports_input_streaming() {
2326 let running_turn = self.running_turn.as_mut()?;
2327 if let Some(sender) = running_turn.streaming_tool_inputs.get(&tool_use.id) {
2328 sender.send_partial(tool_use.input);
2329 return None;
2330 }
2331
2332 let (sender, tool_input) = ToolInputSender::channel();
2333 sender.send_partial(tool_use.input);
2334 running_turn
2335 .streaming_tool_inputs
2336 .insert(tool_use.id.clone(), sender);
2337
2338 let tool = tool.clone();
2339 log::debug!("Running streaming tool {}", tool_use.name);
2340 return Some(self.run_tool(
2341 tool,
2342 tool_input,
2343 tool_use.id,
2344 tool_use.name,
2345 event_stream,
2346 cancellation_rx,
2347 cx,
2348 ));
2349 } else {
2350 return None;
2351 }
2352 }
2353
2354 if let Some(sender) = self
2355 .running_turn
2356 .as_mut()?
2357 .streaming_tool_inputs
2358 .remove(&tool_use.id)
2359 {
2360 sender.send_final(tool_use.input);
2361 return None;
2362 }
2363
2364 log::debug!("Running tool {}", tool_use.name);
2365 let tool_input = ToolInput::ready(tool_use.input);
2366 Some(self.run_tool(
2367 tool,
2368 tool_input,
2369 tool_use.id,
2370 tool_use.name,
2371 event_stream,
2372 cancellation_rx,
2373 cx,
2374 ))
2375 }
2376
2377 fn run_tool(
2378 &self,
2379 tool: Arc<dyn AnyAgentTool>,
2380 tool_input: ToolInput<serde_json::Value>,
2381 tool_use_id: LanguageModelToolUseId,
2382 tool_name: Arc<str>,
2383 event_stream: &ThreadEventStream,
2384 cancellation_rx: watch::Receiver<bool>,
2385 cx: &mut Context<Self>,
2386 ) -> Task<LanguageModelToolResult> {
2387 let fs = self.project.read(cx).fs().clone();
2388 let tool_event_stream = ToolCallEventStream::new(
2389 tool_use_id.clone(),
2390 event_stream.clone(),
2391 Some(fs),
2392 cancellation_rx,
2393 );
2394 tool_event_stream.update_fields(
2395 acp::ToolCallUpdateFields::new().status(acp::ToolCallStatus::InProgress),
2396 );
2397 let supports_images = self.model().is_some_and(|model| model.supports_images());
2398 let tool_result = tool.run(tool_input, tool_event_stream, cx);
2399 cx.foreground_executor().spawn(async move {
2400 let (is_error, output) = match tool_result.await {
2401 Ok(mut output) => {
2402 if let LanguageModelToolResultContent::Image(_) = &output.llm_output
2403 && !supports_images
2404 {
2405 output = AgentToolOutput::from_error(
2406 "Attempted to read an image, but this model doesn't support it.",
2407 );
2408 (true, output)
2409 } else {
2410 (false, output)
2411 }
2412 }
2413 Err(output) => (true, output),
2414 };
2415
2416 LanguageModelToolResult {
2417 tool_use_id,
2418 tool_name,
2419 is_error,
2420 content: output.llm_output,
2421 output: Some(output.raw_output),
2422 }
2423 })
2424 }
2425
2426 fn handle_tool_use_json_parse_error_event(
2427 &mut self,
2428 tool_use_id: LanguageModelToolUseId,
2429 tool_name: Arc<str>,
2430 raw_input: Arc<str>,
2431 json_parse_error: String,
2432 event_stream: &ThreadEventStream,
2433 ) -> LanguageModelToolResult {
2434 let tool_use = LanguageModelToolUse {
2435 id: tool_use_id.clone(),
2436 name: tool_name.clone(),
2437 raw_input: raw_input.to_string(),
2438 input: serde_json::json!({}),
2439 is_input_complete: true,
2440 thought_signature: None,
2441 };
2442 self.send_or_update_tool_use(
2443 &tool_use,
2444 SharedString::from(&tool_use.name),
2445 acp::ToolKind::Other,
2446 event_stream,
2447 );
2448
2449 let tool_output = format!("Error parsing input JSON: {json_parse_error}");
2450 LanguageModelToolResult {
2451 tool_use_id,
2452 tool_name,
2453 is_error: true,
2454 content: LanguageModelToolResultContent::Text(tool_output.into()),
2455 output: Some(serde_json::Value::String(raw_input.to_string())),
2456 }
2457 }
2458
2459 fn send_or_update_tool_use(
2460 &mut self,
2461 tool_use: &LanguageModelToolUse,
2462 title: SharedString,
2463 kind: acp::ToolKind,
2464 event_stream: &ThreadEventStream,
2465 ) {
2466 // Ensure the last message ends in the current tool use
2467 let last_message = self.pending_message();
2468
2469 let has_tool_use = last_message.content.iter_mut().rev().any(|content| {
2470 if let AgentMessageContent::ToolUse(last_tool_use) = content {
2471 if last_tool_use.id == tool_use.id {
2472 *last_tool_use = tool_use.clone();
2473 return true;
2474 }
2475 }
2476 false
2477 });
2478
2479 if !has_tool_use {
2480 event_stream.send_tool_call(
2481 &tool_use.id,
2482 &tool_use.name,
2483 title,
2484 kind,
2485 tool_use.input.clone(),
2486 );
2487 last_message
2488 .content
2489 .push(AgentMessageContent::ToolUse(tool_use.clone()));
2490 } else {
2491 event_stream.update_tool_call_fields(
2492 &tool_use.id,
2493 acp::ToolCallUpdateFields::new()
2494 .title(title.as_str())
2495 .kind(kind)
2496 .raw_input(tool_use.input.clone()),
2497 None,
2498 );
2499 }
2500 }
2501
2502 pub fn title(&self) -> Option<SharedString> {
2503 self.title.clone()
2504 }
2505
2506 pub fn is_generating_summary(&self) -> bool {
2507 self.pending_summary_generation.is_some()
2508 }
2509
2510 pub fn is_generating_title(&self) -> bool {
2511 self.pending_title_generation.is_some()
2512 }
2513
2514 pub fn summary(&mut self, cx: &mut Context<Self>) -> Shared<Task<Option<SharedString>>> {
2515 if let Some(summary) = self.summary.as_ref() {
2516 return Task::ready(Some(summary.clone())).shared();
2517 }
2518 if let Some(task) = self.pending_summary_generation.clone() {
2519 return task;
2520 }
2521 let Some(model) = self.summarization_model.clone() else {
2522 log::error!("No summarization model available");
2523 return Task::ready(None).shared();
2524 };
2525 let mut request = LanguageModelRequest {
2526 intent: Some(CompletionIntent::ThreadContextSummarization),
2527 temperature: AgentSettings::temperature_for_model(&model, cx),
2528 ..Default::default()
2529 };
2530
2531 for message in &self.messages {
2532 request.messages.extend(message.to_request());
2533 }
2534
2535 request.messages.push(LanguageModelRequestMessage {
2536 role: Role::User,
2537 content: vec![SUMMARIZE_THREAD_DETAILED_PROMPT.into()],
2538 cache: false,
2539 reasoning_details: None,
2540 });
2541
2542 let task = cx
2543 .spawn(async move |this, cx| {
2544 let mut summary = String::new();
2545 let mut messages = model.stream_completion(request, cx).await.log_err()?;
2546 while let Some(event) = messages.next().await {
2547 let event = event.log_err()?;
2548 let text = match event {
2549 LanguageModelCompletionEvent::Text(text) => text,
2550 _ => continue,
2551 };
2552
2553 let mut lines = text.lines();
2554 summary.extend(lines.next());
2555 }
2556
2557 log::debug!("Setting summary: {}", summary);
2558 let summary = SharedString::from(summary);
2559
2560 this.update(cx, |this, cx| {
2561 this.summary = Some(summary.clone());
2562 this.pending_summary_generation = None;
2563 cx.notify()
2564 })
2565 .ok()?;
2566
2567 Some(summary)
2568 })
2569 .shared();
2570 self.pending_summary_generation = Some(task.clone());
2571 task
2572 }
2573
2574 pub fn generate_title(&mut self, cx: &mut Context<Self>) {
2575 let Some(model) = self.summarization_model.clone() else {
2576 return;
2577 };
2578
2579 log::debug!(
2580 "Generating title with model: {:?}",
2581 self.summarization_model.as_ref().map(|model| model.name())
2582 );
2583 let mut request = LanguageModelRequest {
2584 intent: Some(CompletionIntent::ThreadSummarization),
2585 temperature: AgentSettings::temperature_for_model(&model, cx),
2586 ..Default::default()
2587 };
2588
2589 for message in &self.messages {
2590 request.messages.extend(message.to_request());
2591 }
2592
2593 request.messages.push(LanguageModelRequestMessage {
2594 role: Role::User,
2595 content: vec![SUMMARIZE_THREAD_PROMPT.into()],
2596 cache: false,
2597 reasoning_details: None,
2598 });
2599 self.pending_title_generation = Some(cx.spawn(async move |this, cx| {
2600 let mut title = String::new();
2601
2602 let generate = async {
2603 let mut messages = model.stream_completion(request, cx).await?;
2604 while let Some(event) = messages.next().await {
2605 let event = event?;
2606 let text = match event {
2607 LanguageModelCompletionEvent::Text(text) => text,
2608 _ => continue,
2609 };
2610
2611 let mut lines = text.lines();
2612 title.extend(lines.next());
2613
2614 // Stop if the LLM generated multiple lines.
2615 if lines.next().is_some() {
2616 break;
2617 }
2618 }
2619 anyhow::Ok(())
2620 };
2621
2622 if generate
2623 .await
2624 .context("failed to generate thread title")
2625 .log_err()
2626 .is_some()
2627 {
2628 _ = this.update(cx, |this, cx| this.set_title(title.into(), cx));
2629 } else {
2630 // Emit TitleUpdated even on failure so that the propagation
2631 // chain (agent::Thread → NativeAgent → AcpThread) fires and
2632 // clears any provisional title that was set before the turn.
2633 _ = this.update(cx, |_, cx| {
2634 cx.emit(TitleUpdated);
2635 cx.notify();
2636 });
2637 }
2638 _ = this.update(cx, |this, _| this.pending_title_generation = None);
2639 }));
2640 }
2641
2642 pub fn set_title(&mut self, title: SharedString, cx: &mut Context<Self>) {
2643 self.pending_title_generation = None;
2644 if Some(&title) != self.title.as_ref() {
2645 self.title = Some(title);
2646 cx.emit(TitleUpdated);
2647 cx.notify();
2648 }
2649 }
2650
2651 fn clear_summary(&mut self) {
2652 self.summary = None;
2653 self.pending_summary_generation = None;
2654 }
2655
2656 fn last_user_message(&self) -> Option<&UserMessage> {
2657 self.messages
2658 .iter()
2659 .rev()
2660 .find_map(|message| match message {
2661 Message::User(user_message) => Some(user_message),
2662 Message::Agent(_) => None,
2663 Message::Resume => None,
2664 })
2665 }
2666
2667 fn pending_message(&mut self) -> &mut AgentMessage {
2668 self.pending_message.get_or_insert_default()
2669 }
2670
2671 fn flush_pending_message(&mut self, cx: &mut Context<Self>) {
2672 let Some(mut message) = self.pending_message.take() else {
2673 return;
2674 };
2675
2676 if message.content.is_empty() {
2677 return;
2678 }
2679
2680 for content in &message.content {
2681 let AgentMessageContent::ToolUse(tool_use) = content else {
2682 continue;
2683 };
2684
2685 if !message.tool_results.contains_key(&tool_use.id) {
2686 message.tool_results.insert(
2687 tool_use.id.clone(),
2688 LanguageModelToolResult {
2689 tool_use_id: tool_use.id.clone(),
2690 tool_name: tool_use.name.clone(),
2691 is_error: true,
2692 content: LanguageModelToolResultContent::Text(TOOL_CANCELED_MESSAGE.into()),
2693 output: None,
2694 },
2695 );
2696 }
2697 }
2698
2699 self.messages.push(Message::Agent(message));
2700 self.updated_at = Utc::now();
2701 self.clear_summary();
2702 cx.notify()
2703 }
2704
2705 pub(crate) fn build_completion_request(
2706 &self,
2707 completion_intent: CompletionIntent,
2708 cx: &App,
2709 ) -> Result<LanguageModelRequest> {
2710 let completion_intent =
2711 if self.is_subagent() && completion_intent == CompletionIntent::UserPrompt {
2712 CompletionIntent::Subagent
2713 } else {
2714 completion_intent
2715 };
2716
2717 let model = self.model().context("No language model configured")?;
2718 let tools = if let Some(turn) = self.running_turn.as_ref() {
2719 turn.tools
2720 .iter()
2721 .filter_map(|(tool_name, tool)| {
2722 log::trace!("Including tool: {}", tool_name);
2723 Some(LanguageModelRequestTool {
2724 name: tool_name.to_string(),
2725 description: tool.description().to_string(),
2726 input_schema: tool.input_schema(model.tool_input_format()).log_err()?,
2727 use_input_streaming: tool.supports_input_streaming(),
2728 })
2729 })
2730 .collect::<Vec<_>>()
2731 } else {
2732 Vec::new()
2733 };
2734
2735 log::debug!("Building completion request");
2736 log::debug!("Completion intent: {:?}", completion_intent);
2737
2738 let available_tools: Vec<_> = self
2739 .running_turn
2740 .as_ref()
2741 .map(|turn| turn.tools.keys().cloned().collect())
2742 .unwrap_or_default();
2743
2744 log::debug!("Request includes {} tools", available_tools.len());
2745 let messages = self.build_request_messages(available_tools, cx);
2746 log::debug!("Request will include {} messages", messages.len());
2747
2748 let request = LanguageModelRequest {
2749 thread_id: Some(self.id.to_string()),
2750 prompt_id: Some(self.prompt_id.to_string()),
2751 intent: Some(completion_intent),
2752 messages,
2753 tools,
2754 tool_choice: None,
2755 stop: Vec::new(),
2756 temperature: AgentSettings::temperature_for_model(model, cx),
2757 thinking_allowed: self.thinking_enabled,
2758 thinking_effort: self.thinking_effort.clone(),
2759 speed: self.speed(),
2760 };
2761
2762 log::debug!("Completion request built successfully");
2763 Ok(request)
2764 }
2765
2766 fn enabled_tools(&self, cx: &App) -> BTreeMap<SharedString, Arc<dyn AnyAgentTool>> {
2767 let Some(model) = self.model.as_ref() else {
2768 return BTreeMap::new();
2769 };
2770 let Some(profile) = AgentSettings::get_global(cx).profiles.get(&self.profile_id) else {
2771 return BTreeMap::new();
2772 };
2773 fn truncate(tool_name: &SharedString) -> SharedString {
2774 if tool_name.len() > MAX_TOOL_NAME_LENGTH {
2775 let mut truncated = tool_name.to_string();
2776 truncated.truncate(MAX_TOOL_NAME_LENGTH);
2777 truncated.into()
2778 } else {
2779 tool_name.clone()
2780 }
2781 }
2782
2783 let use_streaming_edit_tool =
2784 cx.has_flag::<StreamingEditFileToolFeatureFlag>() && model.supports_streaming_tools();
2785
2786 let mut tools = self
2787 .tools
2788 .iter()
2789 .filter_map(|(tool_name, tool)| {
2790 // For streaming_edit_file, check profile against "edit_file" since that's what users configure
2791 let profile_tool_name = if tool_name == StreamingEditFileTool::NAME {
2792 EditFileTool::NAME
2793 } else {
2794 tool_name.as_ref()
2795 };
2796
2797 if tool.supports_provider(&model.provider_id())
2798 && profile.is_tool_enabled(profile_tool_name)
2799 {
2800 match (tool_name.as_ref(), use_streaming_edit_tool) {
2801 (StreamingEditFileTool::NAME, false) | (EditFileTool::NAME, true) => None,
2802 (StreamingEditFileTool::NAME, true) => {
2803 // Expose streaming tool as "edit_file"
2804 Some((SharedString::from(EditFileTool::NAME), tool.clone()))
2805 }
2806 _ => Some((truncate(tool_name), tool.clone())),
2807 }
2808 } else {
2809 None
2810 }
2811 })
2812 .collect::<BTreeMap<_, _>>();
2813
2814 let mut context_server_tools = Vec::new();
2815 let mut seen_tools = tools.keys().cloned().collect::<HashSet<_>>();
2816 let mut duplicate_tool_names = HashSet::default();
2817 for (server_id, server_tools) in self.context_server_registry.read(cx).servers() {
2818 for (tool_name, tool) in server_tools {
2819 if profile.is_context_server_tool_enabled(&server_id.0, &tool_name) {
2820 let tool_name = truncate(tool_name);
2821 if !seen_tools.insert(tool_name.clone()) {
2822 duplicate_tool_names.insert(tool_name.clone());
2823 }
2824 context_server_tools.push((server_id.clone(), tool_name, tool.clone()));
2825 }
2826 }
2827 }
2828
2829 // When there are duplicate tool names, disambiguate by prefixing them
2830 // with the server ID (converted to snake_case for API compatibility).
2831 // In the rare case there isn't enough space for the disambiguated tool
2832 // name, keep only the last tool with this name.
2833 for (server_id, tool_name, tool) in context_server_tools {
2834 if duplicate_tool_names.contains(&tool_name) {
2835 let available = MAX_TOOL_NAME_LENGTH.saturating_sub(tool_name.len());
2836 if available >= 2 {
2837 let mut disambiguated = server_id.0.to_snake_case();
2838 disambiguated.truncate(available - 1);
2839 disambiguated.push('_');
2840 disambiguated.push_str(&tool_name);
2841 tools.insert(disambiguated.into(), tool.clone());
2842 } else {
2843 tools.insert(tool_name, tool.clone());
2844 }
2845 } else {
2846 tools.insert(tool_name, tool.clone());
2847 }
2848 }
2849
2850 tools
2851 }
2852
2853 fn refresh_turn_tools(&mut self, cx: &App) {
2854 let tools = self.enabled_tools(cx);
2855 if let Some(turn) = self.running_turn.as_mut() {
2856 turn.tools = tools;
2857 }
2858 }
2859
2860 fn tool(&self, name: &str) -> Option<Arc<dyn AnyAgentTool>> {
2861 self.running_turn.as_ref()?.tools.get(name).cloned()
2862 }
2863
2864 pub fn has_tool(&self, name: &str) -> bool {
2865 self.running_turn
2866 .as_ref()
2867 .is_some_and(|turn| turn.tools.contains_key(name))
2868 }
2869
2870 #[cfg(any(test, feature = "test-support"))]
2871 pub fn has_registered_tool(&self, name: &str) -> bool {
2872 self.tools.contains_key(name)
2873 }
2874
2875 pub fn registered_tool_names(&self) -> Vec<SharedString> {
2876 self.tools.keys().cloned().collect()
2877 }
2878
2879 pub(crate) fn register_running_subagent(&mut self, subagent: WeakEntity<Thread>) {
2880 self.running_subagents.push(subagent);
2881 }
2882
2883 pub(crate) fn unregister_running_subagent(
2884 &mut self,
2885 subagent_session_id: &acp::SessionId,
2886 cx: &App,
2887 ) {
2888 self.running_subagents.retain(|s| {
2889 s.upgrade()
2890 .map_or(false, |s| s.read(cx).id() != subagent_session_id)
2891 });
2892 }
2893
2894 #[cfg(any(test, feature = "test-support"))]
2895 pub fn running_subagent_ids(&self, cx: &App) -> Vec<acp::SessionId> {
2896 self.running_subagents
2897 .iter()
2898 .filter_map(|s| s.upgrade().map(|s| s.read(cx).id().clone()))
2899 .collect()
2900 }
2901
2902 pub fn is_subagent(&self) -> bool {
2903 self.subagent_context.is_some()
2904 }
2905
2906 pub fn parent_thread_id(&self) -> Option<acp::SessionId> {
2907 self.subagent_context
2908 .as_ref()
2909 .map(|c| c.parent_thread_id.clone())
2910 }
2911
2912 pub fn depth(&self) -> u8 {
2913 self.subagent_context.as_ref().map(|c| c.depth).unwrap_or(0)
2914 }
2915
2916 #[cfg(any(test, feature = "test-support"))]
2917 pub fn set_subagent_context(&mut self, context: SubagentContext) {
2918 self.subagent_context = Some(context);
2919 }
2920
2921 pub fn is_turn_complete(&self) -> bool {
2922 self.running_turn.is_none()
2923 }
2924
2925 fn build_request_messages(
2926 &self,
2927 available_tools: Vec<SharedString>,
2928 cx: &App,
2929 ) -> Vec<LanguageModelRequestMessage> {
2930 log::trace!(
2931 "Building request messages from {} thread messages",
2932 self.messages.len()
2933 );
2934
2935 let system_prompt = SystemPromptTemplate {
2936 project: self.project_context.read(cx),
2937 available_tools,
2938 available_skills: self.available_skills.read(cx).formatted().to_string(),
2939 model_name: self.model.as_ref().map(|m| m.name().0.to_string()),
2940 }
2941 .render(&self.templates)
2942 .context("failed to build system prompt")
2943 .expect("Invalid template");
2944 let mut messages = vec![LanguageModelRequestMessage {
2945 role: Role::System,
2946 content: vec![system_prompt.into()],
2947 cache: false,
2948 reasoning_details: None,
2949 }];
2950 for message in &self.messages {
2951 messages.extend(message.to_request());
2952 }
2953
2954 if let Some(last_message) = messages.last_mut() {
2955 last_message.cache = true;
2956 }
2957
2958 if let Some(message) = self.pending_message.as_ref() {
2959 messages.extend(message.to_request());
2960 }
2961
2962 messages
2963 }
2964
2965 pub fn to_markdown(&self) -> String {
2966 let mut markdown = String::new();
2967 for (ix, message) in self.messages.iter().enumerate() {
2968 if ix > 0 {
2969 markdown.push('\n');
2970 }
2971 match message {
2972 Message::User(_) => markdown.push_str("## User\n\n"),
2973 Message::Agent(_) => markdown.push_str("## Assistant\n\n"),
2974 Message::Resume => {}
2975 }
2976 markdown.push_str(&message.to_markdown());
2977 }
2978
2979 if let Some(message) = self.pending_message.as_ref() {
2980 markdown.push_str("\n## Assistant\n\n");
2981 markdown.push_str(&message.to_markdown());
2982 }
2983
2984 markdown
2985 }
2986
2987 fn advance_prompt_id(&mut self) {
2988 self.prompt_id = PromptId::new();
2989 }
2990
2991 fn retry_strategy_for(error: &LanguageModelCompletionError) -> Option<RetryStrategy> {
2992 use LanguageModelCompletionError::*;
2993 use http_client::StatusCode;
2994
2995 // General strategy here:
2996 // - If retrying won't help (e.g. invalid API key or payload too large), return None so we don't retry at all.
2997 // - If it's a time-based issue (e.g. server overloaded, rate limit exceeded), retry up to 4 times with exponential backoff.
2998 // - If it's an issue that *might* be fixed by retrying (e.g. internal server error), retry up to 3 times.
2999 match error {
3000 HttpResponseError {
3001 status_code: StatusCode::TOO_MANY_REQUESTS,
3002 ..
3003 } => Some(RetryStrategy::ExponentialBackoff {
3004 initial_delay: BASE_RETRY_DELAY,
3005 max_attempts: MAX_RETRY_ATTEMPTS,
3006 }),
3007 ServerOverloaded { retry_after, .. } | RateLimitExceeded { retry_after, .. } => {
3008 Some(RetryStrategy::Fixed {
3009 delay: retry_after.unwrap_or(BASE_RETRY_DELAY),
3010 max_attempts: MAX_RETRY_ATTEMPTS,
3011 })
3012 }
3013 UpstreamProviderError {
3014 status,
3015 retry_after,
3016 ..
3017 } => match *status {
3018 StatusCode::TOO_MANY_REQUESTS | StatusCode::SERVICE_UNAVAILABLE => {
3019 Some(RetryStrategy::Fixed {
3020 delay: retry_after.unwrap_or(BASE_RETRY_DELAY),
3021 max_attempts: MAX_RETRY_ATTEMPTS,
3022 })
3023 }
3024 StatusCode::INTERNAL_SERVER_ERROR => Some(RetryStrategy::Fixed {
3025 delay: retry_after.unwrap_or(BASE_RETRY_DELAY),
3026 // Internal Server Error could be anything, retry up to 3 times.
3027 max_attempts: 3,
3028 }),
3029 status => {
3030 // There is no StatusCode variant for the unofficial HTTP 529 ("The service is overloaded"),
3031 // but we frequently get them in practice. See https://http.dev/529
3032 if status.as_u16() == 529 {
3033 Some(RetryStrategy::Fixed {
3034 delay: retry_after.unwrap_or(BASE_RETRY_DELAY),
3035 max_attempts: MAX_RETRY_ATTEMPTS,
3036 })
3037 } else {
3038 Some(RetryStrategy::Fixed {
3039 delay: retry_after.unwrap_or(BASE_RETRY_DELAY),
3040 max_attempts: 2,
3041 })
3042 }
3043 }
3044 },
3045 ApiInternalServerError { .. } => Some(RetryStrategy::Fixed {
3046 delay: BASE_RETRY_DELAY,
3047 max_attempts: 3,
3048 }),
3049 ApiReadResponseError { .. }
3050 | HttpSend { .. }
3051 | DeserializeResponse { .. }
3052 | BadRequestFormat { .. } => Some(RetryStrategy::Fixed {
3053 delay: BASE_RETRY_DELAY,
3054 max_attempts: 3,
3055 }),
3056 // Retrying these errors definitely shouldn't help.
3057 HttpResponseError {
3058 status_code:
3059 StatusCode::PAYLOAD_TOO_LARGE | StatusCode::FORBIDDEN | StatusCode::UNAUTHORIZED,
3060 ..
3061 }
3062 | AuthenticationError { .. }
3063 | PermissionError { .. }
3064 | NoApiKey { .. }
3065 | ApiEndpointNotFound { .. }
3066 | PromptTooLarge { .. } => None,
3067 // These errors might be transient, so retry them
3068 SerializeRequest { .. } | BuildRequestBody { .. } | StreamEndedUnexpectedly { .. } => {
3069 Some(RetryStrategy::Fixed {
3070 delay: BASE_RETRY_DELAY,
3071 max_attempts: 1,
3072 })
3073 }
3074 // Retry all other 4xx and 5xx errors once.
3075 HttpResponseError { status_code, .. }
3076 if status_code.is_client_error() || status_code.is_server_error() =>
3077 {
3078 Some(RetryStrategy::Fixed {
3079 delay: BASE_RETRY_DELAY,
3080 max_attempts: 3,
3081 })
3082 }
3083 Other(err) if err.is::<language_model::PaymentRequiredError>() => {
3084 // Retrying won't help for Payment Required errors.
3085 None
3086 }
3087 // Conservatively assume that any other errors are non-retryable
3088 HttpResponseError { .. } | Other(..) => Some(RetryStrategy::Fixed {
3089 delay: BASE_RETRY_DELAY,
3090 max_attempts: 2,
3091 }),
3092 }
3093 }
3094}
3095
3096struct RunningTurn {
3097 /// Holds the task that handles agent interaction until the end of the turn.
3098 /// Survives across multiple requests as the model performs tool calls and
3099 /// we run tools, report their results.
3100 _task: Task<()>,
3101 /// The current event stream for the running turn. Used to report a final
3102 /// cancellation event if we cancel the turn.
3103 event_stream: ThreadEventStream,
3104 /// The tools that are enabled for the current iteration of the turn.
3105 /// Refreshed at the start of each iteration via `refresh_turn_tools`.
3106 tools: BTreeMap<SharedString, Arc<dyn AnyAgentTool>>,
3107 /// Sender to signal tool cancellation. When cancel is called, this is
3108 /// set to true so all tools can detect user-initiated cancellation.
3109 cancellation_tx: watch::Sender<bool>,
3110 /// Senders for tools that support input streaming and have already been
3111 /// started but are still receiving input from the LLM.
3112 streaming_tool_inputs: HashMap<LanguageModelToolUseId, ToolInputSender>,
3113}
3114
3115impl RunningTurn {
3116 fn cancel(mut self) -> Task<()> {
3117 log::debug!("Cancelling in progress turn");
3118 self.cancellation_tx.send(true).ok();
3119 self.event_stream.send_canceled();
3120 self._task
3121 }
3122}
3123
3124pub struct TokenUsageUpdated(pub Option<acp_thread::TokenUsage>);
3125
3126impl EventEmitter<TokenUsageUpdated> for Thread {}
3127
3128pub struct TitleUpdated;
3129
3130impl EventEmitter<TitleUpdated> for Thread {}
3131
3132/// A channel-based wrapper that delivers tool input to a running tool.
3133///
3134/// For non-streaming tools, created via `ToolInput::ready()` so `.recv()` resolves immediately.
3135/// For streaming tools, partial JSON snapshots arrive via `.recv_partial()` as the LLM streams
3136/// them, followed by the final complete input available through `.recv()`.
3137pub struct ToolInput<T> {
3138 partial_rx: mpsc::UnboundedReceiver<serde_json::Value>,
3139 final_rx: oneshot::Receiver<serde_json::Value>,
3140 _phantom: PhantomData<T>,
3141}
3142
3143impl<T: DeserializeOwned> ToolInput<T> {
3144 #[cfg(any(test, feature = "test-support"))]
3145 pub fn resolved(input: impl Serialize) -> Self {
3146 let value = serde_json::to_value(input).expect("failed to serialize tool input");
3147 Self::ready(value)
3148 }
3149
3150 pub fn ready(value: serde_json::Value) -> Self {
3151 let (partial_tx, partial_rx) = mpsc::unbounded();
3152 drop(partial_tx);
3153 let (final_tx, final_rx) = oneshot::channel();
3154 final_tx.send(value).ok();
3155 Self {
3156 partial_rx,
3157 final_rx,
3158 _phantom: PhantomData,
3159 }
3160 }
3161
3162 #[cfg(any(test, feature = "test-support"))]
3163 pub fn test() -> (ToolInputSender, Self) {
3164 let (sender, input) = ToolInputSender::channel();
3165 (sender, input.cast())
3166 }
3167
3168 /// Wait for the final deserialized input, ignoring all partial updates.
3169 /// Non-streaming tools can use this to wait until the whole input is available.
3170 pub async fn recv(mut self) -> Result<T> {
3171 // Drain any remaining partials
3172 while self.partial_rx.next().await.is_some() {}
3173 let value = self
3174 .final_rx
3175 .await
3176 .map_err(|_| anyhow!("tool input was not fully received"))?;
3177 serde_json::from_value(value).map_err(Into::into)
3178 }
3179
3180 /// Returns the next partial JSON snapshot, or `None` when input is complete.
3181 /// Once this returns `None`, call `recv()` to get the final input.
3182 pub async fn recv_partial(&mut self) -> Option<serde_json::Value> {
3183 self.partial_rx.next().await
3184 }
3185
3186 fn cast<U: DeserializeOwned>(self) -> ToolInput<U> {
3187 ToolInput {
3188 partial_rx: self.partial_rx,
3189 final_rx: self.final_rx,
3190 _phantom: PhantomData,
3191 }
3192 }
3193}
3194
3195pub struct ToolInputSender {
3196 partial_tx: mpsc::UnboundedSender<serde_json::Value>,
3197 final_tx: Option<oneshot::Sender<serde_json::Value>>,
3198}
3199
3200impl ToolInputSender {
3201 pub(crate) fn channel() -> (Self, ToolInput<serde_json::Value>) {
3202 let (partial_tx, partial_rx) = mpsc::unbounded();
3203 let (final_tx, final_rx) = oneshot::channel();
3204 let sender = Self {
3205 partial_tx,
3206 final_tx: Some(final_tx),
3207 };
3208 let input = ToolInput {
3209 partial_rx,
3210 final_rx,
3211 _phantom: PhantomData,
3212 };
3213 (sender, input)
3214 }
3215
3216 pub(crate) fn has_received_final(&self) -> bool {
3217 self.final_tx.is_none()
3218 }
3219
3220 pub(crate) fn send_partial(&self, value: serde_json::Value) {
3221 self.partial_tx.unbounded_send(value).ok();
3222 }
3223
3224 pub(crate) fn send_final(mut self, value: serde_json::Value) {
3225 // Close the partial channel so recv_partial() returns None
3226 self.partial_tx.close_channel();
3227 if let Some(final_tx) = self.final_tx.take() {
3228 final_tx.send(value).ok();
3229 }
3230 }
3231}
3232
3233pub trait AgentTool
3234where
3235 Self: 'static + Sized,
3236{
3237 type Input: for<'de> Deserialize<'de> + Serialize + JsonSchema;
3238 type Output: for<'de> Deserialize<'de> + Serialize + Into<LanguageModelToolResultContent>;
3239
3240 const NAME: &'static str;
3241
3242 fn description() -> SharedString {
3243 let schema = schemars::schema_for!(Self::Input);
3244 SharedString::new(
3245 schema
3246 .get("description")
3247 .and_then(|description| description.as_str())
3248 .unwrap_or_default(),
3249 )
3250 }
3251
3252 fn kind() -> acp::ToolKind;
3253
3254 /// The initial tool title to display. Can be updated during the tool run.
3255 fn initial_title(
3256 &self,
3257 input: Result<Self::Input, serde_json::Value>,
3258 cx: &mut App,
3259 ) -> SharedString;
3260
3261 /// Returns the JSON schema that describes the tool's input.
3262 fn input_schema(format: LanguageModelToolSchemaFormat) -> Schema {
3263 language_model::tool_schema::root_schema_for::<Self::Input>(format)
3264 }
3265
3266 /// Returns whether the tool supports streaming of tool use parameters.
3267 fn supports_input_streaming() -> bool {
3268 false
3269 }
3270
3271 /// Some tools rely on a provider for the underlying billing or other reasons.
3272 /// Allow the tool to check if they are compatible, or should be filtered out.
3273 fn supports_provider(_provider: &LanguageModelProviderId) -> bool {
3274 true
3275 }
3276
3277 /// Runs the tool with the provided input.
3278 ///
3279 /// Returns `Result<Self::Output, Self::Output>` rather than `Result<Self::Output, anyhow::Error>`
3280 /// because tool errors are sent back to the model as tool results. This means error output must
3281 /// be structured and readable by the agent — not an arbitrary `anyhow::Error`. Returning the
3282 /// same `Output` type for both success and failure lets tools provide structured data while
3283 /// still signaling whether the invocation succeeded or failed.
3284 fn run(
3285 self: Arc<Self>,
3286 input: ToolInput<Self::Input>,
3287 event_stream: ToolCallEventStream,
3288 cx: &mut App,
3289 ) -> Task<Result<Self::Output, Self::Output>>;
3290
3291 /// Emits events for a previous execution of the tool.
3292 fn replay(
3293 &self,
3294 _input: Self::Input,
3295 _output: Self::Output,
3296 _event_stream: ToolCallEventStream,
3297 _cx: &mut App,
3298 ) -> Result<()> {
3299 Ok(())
3300 }
3301
3302 fn erase(self) -> Arc<dyn AnyAgentTool> {
3303 Arc::new(Erased(Arc::new(self)))
3304 }
3305}
3306
3307pub struct Erased<T>(T);
3308
3309pub struct AgentToolOutput {
3310 pub llm_output: LanguageModelToolResultContent,
3311 pub raw_output: serde_json::Value,
3312}
3313
3314impl AgentToolOutput {
3315 pub fn from_error(message: impl Into<String>) -> Self {
3316 let message = message.into();
3317 let llm_output = LanguageModelToolResultContent::Text(Arc::from(message.as_str()));
3318 Self {
3319 raw_output: serde_json::Value::String(message),
3320 llm_output,
3321 }
3322 }
3323}
3324
3325pub trait AnyAgentTool {
3326 fn name(&self) -> SharedString;
3327 fn description(&self) -> SharedString;
3328 fn kind(&self) -> acp::ToolKind;
3329 fn initial_title(&self, input: serde_json::Value, _cx: &mut App) -> SharedString;
3330 fn input_schema(&self, format: LanguageModelToolSchemaFormat) -> Result<serde_json::Value>;
3331 fn supports_input_streaming(&self) -> bool {
3332 false
3333 }
3334 fn supports_provider(&self, _provider: &LanguageModelProviderId) -> bool {
3335 true
3336 }
3337 /// See [`AgentTool::run`] for why this returns `Result<AgentToolOutput, AgentToolOutput>`.
3338 fn run(
3339 self: Arc<Self>,
3340 input: ToolInput<serde_json::Value>,
3341 event_stream: ToolCallEventStream,
3342 cx: &mut App,
3343 ) -> Task<Result<AgentToolOutput, AgentToolOutput>>;
3344 fn replay(
3345 &self,
3346 input: serde_json::Value,
3347 output: serde_json::Value,
3348 event_stream: ToolCallEventStream,
3349 cx: &mut App,
3350 ) -> Result<()>;
3351}
3352
3353impl<T> AnyAgentTool for Erased<Arc<T>>
3354where
3355 T: AgentTool,
3356{
3357 fn name(&self) -> SharedString {
3358 T::NAME.into()
3359 }
3360
3361 fn description(&self) -> SharedString {
3362 T::description()
3363 }
3364
3365 fn kind(&self) -> agent_client_protocol::ToolKind {
3366 T::kind()
3367 }
3368
3369 fn supports_input_streaming(&self) -> bool {
3370 T::supports_input_streaming()
3371 }
3372
3373 fn initial_title(&self, input: serde_json::Value, _cx: &mut App) -> SharedString {
3374 let parsed_input = serde_json::from_value(input.clone()).map_err(|_| input);
3375 self.0.initial_title(parsed_input, _cx)
3376 }
3377
3378 fn input_schema(&self, format: LanguageModelToolSchemaFormat) -> Result<serde_json::Value> {
3379 let mut json = serde_json::to_value(T::input_schema(format))?;
3380 language_model::tool_schema::adapt_schema_to_format(&mut json, format)?;
3381 Ok(json)
3382 }
3383
3384 fn supports_provider(&self, provider: &LanguageModelProviderId) -> bool {
3385 T::supports_provider(provider)
3386 }
3387
3388 fn run(
3389 self: Arc<Self>,
3390 input: ToolInput<serde_json::Value>,
3391 event_stream: ToolCallEventStream,
3392 cx: &mut App,
3393 ) -> Task<Result<AgentToolOutput, AgentToolOutput>> {
3394 let tool_input: ToolInput<T::Input> = input.cast();
3395 let task = self.0.clone().run(tool_input, event_stream, cx);
3396 cx.spawn(async move |_cx| match task.await {
3397 Ok(output) => {
3398 let raw_output = serde_json::to_value(&output).map_err(|e| {
3399 AgentToolOutput::from_error(format!("Failed to serialize tool output: {e}"))
3400 })?;
3401 Ok(AgentToolOutput {
3402 llm_output: output.into(),
3403 raw_output,
3404 })
3405 }
3406 Err(error_output) => {
3407 let raw_output = serde_json::to_value(&error_output).unwrap_or_else(|e| {
3408 log::error!("Failed to serialize tool error output: {e}");
3409 serde_json::Value::Null
3410 });
3411 Err(AgentToolOutput {
3412 llm_output: error_output.into(),
3413 raw_output,
3414 })
3415 }
3416 })
3417 }
3418
3419 fn replay(
3420 &self,
3421 input: serde_json::Value,
3422 output: serde_json::Value,
3423 event_stream: ToolCallEventStream,
3424 cx: &mut App,
3425 ) -> Result<()> {
3426 let input = serde_json::from_value(input)?;
3427 let output = serde_json::from_value(output)?;
3428 self.0.replay(input, output, event_stream, cx)
3429 }
3430}
3431
3432#[derive(Clone)]
3433struct ThreadEventStream(mpsc::UnboundedSender<Result<ThreadEvent>>);
3434
3435impl ThreadEventStream {
3436 fn send_user_message(&self, message: &UserMessage) {
3437 self.0
3438 .unbounded_send(Ok(ThreadEvent::UserMessage(message.clone())))
3439 .ok();
3440 }
3441
3442 fn send_text(&self, text: &str) {
3443 self.0
3444 .unbounded_send(Ok(ThreadEvent::AgentText(text.to_string())))
3445 .ok();
3446 }
3447
3448 fn send_thinking(&self, text: &str) {
3449 self.0
3450 .unbounded_send(Ok(ThreadEvent::AgentThinking(text.to_string())))
3451 .ok();
3452 }
3453
3454 fn send_tool_call(
3455 &self,
3456 id: &LanguageModelToolUseId,
3457 tool_name: &str,
3458 title: SharedString,
3459 kind: acp::ToolKind,
3460 input: serde_json::Value,
3461 ) {
3462 self.0
3463 .unbounded_send(Ok(ThreadEvent::ToolCall(Self::initial_tool_call(
3464 id,
3465 tool_name,
3466 title.to_string(),
3467 kind,
3468 input,
3469 ))))
3470 .ok();
3471 }
3472
3473 fn initial_tool_call(
3474 id: &LanguageModelToolUseId,
3475 tool_name: &str,
3476 title: String,
3477 kind: acp::ToolKind,
3478 input: serde_json::Value,
3479 ) -> acp::ToolCall {
3480 acp::ToolCall::new(id.to_string(), title)
3481 .kind(kind)
3482 .raw_input(input)
3483 .meta(acp_thread::meta_with_tool_name(tool_name))
3484 }
3485
3486 fn update_tool_call_fields(
3487 &self,
3488 tool_use_id: &LanguageModelToolUseId,
3489 fields: acp::ToolCallUpdateFields,
3490 meta: Option<acp::Meta>,
3491 ) {
3492 self.0
3493 .unbounded_send(Ok(ThreadEvent::ToolCallUpdate(
3494 acp::ToolCallUpdate::new(tool_use_id.to_string(), fields)
3495 .meta(meta)
3496 .into(),
3497 )))
3498 .ok();
3499 }
3500
3501 fn send_plan(&self, plan: acp::Plan) {
3502 self.0.unbounded_send(Ok(ThreadEvent::Plan(plan))).ok();
3503 }
3504
3505 fn send_retry(&self, status: acp_thread::RetryStatus) {
3506 self.0.unbounded_send(Ok(ThreadEvent::Retry(status))).ok();
3507 }
3508
3509 fn send_stop(&self, reason: acp::StopReason) {
3510 self.0.unbounded_send(Ok(ThreadEvent::Stop(reason))).ok();
3511 }
3512
3513 fn send_canceled(&self) {
3514 self.0
3515 .unbounded_send(Ok(ThreadEvent::Stop(acp::StopReason::Cancelled)))
3516 .ok();
3517 }
3518
3519 fn send_error(&self, error: impl Into<anyhow::Error>) {
3520 self.0.unbounded_send(Err(error.into())).ok();
3521 }
3522}
3523
3524#[derive(Clone)]
3525pub struct ToolCallEventStream {
3526 tool_use_id: LanguageModelToolUseId,
3527 stream: ThreadEventStream,
3528 fs: Option<Arc<dyn Fs>>,
3529 cancellation_rx: watch::Receiver<bool>,
3530}
3531
3532impl ToolCallEventStream {
3533 #[cfg(any(test, feature = "test-support"))]
3534 pub fn test() -> (Self, ToolCallEventStreamReceiver) {
3535 let (stream, receiver, _cancellation_tx) = Self::test_with_cancellation();
3536 (stream, receiver)
3537 }
3538
3539 #[cfg(any(test, feature = "test-support"))]
3540 pub fn test_with_cancellation() -> (Self, ToolCallEventStreamReceiver, watch::Sender<bool>) {
3541 let (events_tx, events_rx) = mpsc::unbounded::<Result<ThreadEvent>>();
3542 let (cancellation_tx, cancellation_rx) = watch::channel(false);
3543
3544 let stream = ToolCallEventStream::new(
3545 "test_id".into(),
3546 ThreadEventStream(events_tx),
3547 None,
3548 cancellation_rx,
3549 );
3550
3551 (
3552 stream,
3553 ToolCallEventStreamReceiver(events_rx),
3554 cancellation_tx,
3555 )
3556 }
3557
3558 /// Signal cancellation for this event stream. Only available in tests.
3559 #[cfg(any(test, feature = "test-support"))]
3560 pub fn signal_cancellation_with_sender(cancellation_tx: &mut watch::Sender<bool>) {
3561 cancellation_tx.send(true).ok();
3562 }
3563
3564 fn new(
3565 tool_use_id: LanguageModelToolUseId,
3566 stream: ThreadEventStream,
3567 fs: Option<Arc<dyn Fs>>,
3568 cancellation_rx: watch::Receiver<bool>,
3569 ) -> Self {
3570 Self {
3571 tool_use_id,
3572 stream,
3573 fs,
3574 cancellation_rx,
3575 }
3576 }
3577
3578 /// Returns a future that resolves when the user cancels the tool call.
3579 /// Tools should select on this alongside their main work to detect user cancellation.
3580 pub fn cancelled_by_user(&self) -> impl std::future::Future<Output = ()> + '_ {
3581 let mut rx = self.cancellation_rx.clone();
3582 async move {
3583 loop {
3584 if *rx.borrow() {
3585 return;
3586 }
3587 if rx.changed().await.is_err() {
3588 // Sender dropped, will never be cancelled
3589 std::future::pending::<()>().await;
3590 }
3591 }
3592 }
3593 }
3594
3595 /// Returns true if the user has cancelled this tool call.
3596 /// This is useful for checking cancellation state after an operation completes,
3597 /// to determine if the completion was due to user cancellation.
3598 pub fn was_cancelled_by_user(&self) -> bool {
3599 *self.cancellation_rx.clone().borrow()
3600 }
3601
3602 pub fn tool_use_id(&self) -> &LanguageModelToolUseId {
3603 &self.tool_use_id
3604 }
3605
3606 pub fn update_fields(&self, fields: acp::ToolCallUpdateFields) {
3607 self.stream
3608 .update_tool_call_fields(&self.tool_use_id, fields, None);
3609 }
3610
3611 pub fn update_fields_with_meta(
3612 &self,
3613 fields: acp::ToolCallUpdateFields,
3614 meta: Option<acp::Meta>,
3615 ) {
3616 self.stream
3617 .update_tool_call_fields(&self.tool_use_id, fields, meta);
3618 }
3619
3620 pub fn update_diff(&self, diff: Entity<acp_thread::Diff>) {
3621 self.stream
3622 .0
3623 .unbounded_send(Ok(ThreadEvent::ToolCallUpdate(
3624 acp_thread::ToolCallUpdateDiff {
3625 id: acp::ToolCallId::new(self.tool_use_id.to_string()),
3626 diff,
3627 }
3628 .into(),
3629 )))
3630 .ok();
3631 }
3632
3633 pub fn subagent_spawned(&self, id: acp::SessionId) {
3634 self.stream
3635 .0
3636 .unbounded_send(Ok(ThreadEvent::SubagentSpawned(id)))
3637 .ok();
3638 }
3639
3640 pub fn update_plan(&self, plan: acp::Plan) {
3641 self.stream.send_plan(plan);
3642 }
3643
3644 /// Authorize a third-party tool (e.g., MCP tool from a context server).
3645 ///
3646 /// Unlike built-in tools, third-party tools don't support pattern-based permissions.
3647 /// They only support `default` (allow/deny/confirm) per tool.
3648 ///
3649 /// Uses the dropdown authorization flow with two granularities:
3650 /// - "Always for <display_name> MCP tool" → sets `tools.<tool_id>.default = "allow"` or "deny"
3651 /// - "Only this time" → allow/deny once
3652 pub fn authorize_third_party_tool(
3653 &self,
3654 title: impl Into<String>,
3655 tool_id: String,
3656 display_name: String,
3657 cx: &mut App,
3658 ) -> Task<Result<()>> {
3659 let settings = agent_settings::AgentSettings::get_global(cx);
3660
3661 let decision = decide_permission_from_settings(&tool_id, &[String::new()], &settings);
3662
3663 match decision {
3664 ToolPermissionDecision::Allow => return Task::ready(Ok(())),
3665 ToolPermissionDecision::Deny(reason) => return Task::ready(Err(anyhow!(reason))),
3666 ToolPermissionDecision::Confirm => {}
3667 }
3668
3669 let (response_tx, response_rx) = oneshot::channel();
3670 if let Err(error) = self
3671 .stream
3672 .0
3673 .unbounded_send(Ok(ThreadEvent::ToolCallAuthorization(
3674 ToolCallAuthorization {
3675 tool_call: acp::ToolCallUpdate::new(
3676 self.tool_use_id.to_string(),
3677 acp::ToolCallUpdateFields::new().title(title.into()),
3678 ),
3679 options: acp_thread::PermissionOptions::Dropdown(vec![
3680 acp_thread::PermissionOptionChoice {
3681 allow: acp::PermissionOption::new(
3682 acp::PermissionOptionId::new(format!(
3683 "always_allow_mcp:{}",
3684 tool_id
3685 )),
3686 format!("Always for {} MCP tool", display_name),
3687 acp::PermissionOptionKind::AllowAlways,
3688 ),
3689 deny: acp::PermissionOption::new(
3690 acp::PermissionOptionId::new(format!(
3691 "always_deny_mcp:{}",
3692 tool_id
3693 )),
3694 format!("Always for {} MCP tool", display_name),
3695 acp::PermissionOptionKind::RejectAlways,
3696 ),
3697 sub_patterns: vec![],
3698 },
3699 acp_thread::PermissionOptionChoice {
3700 allow: acp::PermissionOption::new(
3701 acp::PermissionOptionId::new("allow"),
3702 "Only this time",
3703 acp::PermissionOptionKind::AllowOnce,
3704 ),
3705 deny: acp::PermissionOption::new(
3706 acp::PermissionOptionId::new("deny"),
3707 "Only this time",
3708 acp::PermissionOptionKind::RejectOnce,
3709 ),
3710 sub_patterns: vec![],
3711 },
3712 ]),
3713 response: response_tx,
3714 context: None,
3715 },
3716 )))
3717 {
3718 log::error!("Failed to send tool call authorization: {error}");
3719 return Task::ready(Err(anyhow!(
3720 "Failed to send tool call authorization: {error}"
3721 )));
3722 }
3723
3724 let fs = self.fs.clone();
3725 cx.spawn(async move |cx| {
3726 let outcome = response_rx.await?;
3727 let is_allow = Self::persist_permission_outcome(&outcome, fs, &cx);
3728 if is_allow {
3729 Ok(())
3730 } else {
3731 Err(anyhow!("Permission to run tool denied by user"))
3732 }
3733 })
3734 }
3735
3736 pub fn authorize(
3737 &self,
3738 title: impl Into<String>,
3739 context: ToolPermissionContext,
3740 cx: &mut App,
3741 ) -> Task<Result<()>> {
3742 let options = context.build_permission_options();
3743
3744 let (response_tx, response_rx) = oneshot::channel();
3745 if let Err(error) = self
3746 .stream
3747 .0
3748 .unbounded_send(Ok(ThreadEvent::ToolCallAuthorization(
3749 ToolCallAuthorization {
3750 tool_call: acp::ToolCallUpdate::new(
3751 self.tool_use_id.to_string(),
3752 acp::ToolCallUpdateFields::new().title(title.into()),
3753 ),
3754 options,
3755 response: response_tx,
3756 context: Some(context),
3757 },
3758 )))
3759 {
3760 log::error!("Failed to send tool call authorization: {error}");
3761 return Task::ready(Err(anyhow!(
3762 "Failed to send tool call authorization: {error}"
3763 )));
3764 }
3765
3766 let fs = self.fs.clone();
3767 cx.spawn(async move |cx| {
3768 let outcome = response_rx.await?;
3769 let is_allow = Self::persist_permission_outcome(&outcome, fs, &cx);
3770 if is_allow {
3771 Ok(())
3772 } else {
3773 Err(anyhow!("Permission to run tool denied by user"))
3774 }
3775 })
3776 }
3777
3778 /// Interprets a `SelectedPermissionOutcome` and persists any settings changes.
3779 /// Returns `true` if the tool call should be allowed, `false` if denied.
3780 fn persist_permission_outcome(
3781 outcome: &acp_thread::SelectedPermissionOutcome,
3782 fs: Option<Arc<dyn Fs>>,
3783 cx: &AsyncApp,
3784 ) -> bool {
3785 let option_id = outcome.option_id.0.as_ref();
3786
3787 let always_permission = option_id
3788 .strip_prefix("always_allow:")
3789 .map(|tool| (tool, ToolPermissionMode::Allow))
3790 .or_else(|| {
3791 option_id
3792 .strip_prefix("always_deny:")
3793 .map(|tool| (tool, ToolPermissionMode::Deny))
3794 })
3795 .or_else(|| {
3796 option_id
3797 .strip_prefix("always_allow_mcp:")
3798 .map(|tool| (tool, ToolPermissionMode::Allow))
3799 })
3800 .or_else(|| {
3801 option_id
3802 .strip_prefix("always_deny_mcp:")
3803 .map(|tool| (tool, ToolPermissionMode::Deny))
3804 });
3805
3806 if let Some((tool, mode)) = always_permission {
3807 let params = outcome.params.as_ref();
3808 Self::persist_always_permission(tool, mode, params, fs, cx);
3809 return mode == ToolPermissionMode::Allow;
3810 }
3811
3812 // Handle simple "allow" / "deny" (once, no persistence)
3813 if option_id == "allow" || option_id == "deny" {
3814 debug_assert!(
3815 outcome.params.is_none(),
3816 "unexpected params for once-only permission"
3817 );
3818 return option_id == "allow";
3819 }
3820
3821 debug_assert!(false, "unexpected permission option_id: {option_id}");
3822 false
3823 }
3824
3825 /// Persists an "always allow" or "always deny" permission, using sub_patterns
3826 /// from params when present.
3827 fn persist_always_permission(
3828 tool: &str,
3829 mode: ToolPermissionMode,
3830 params: Option<&acp_thread::SelectedPermissionParams>,
3831 fs: Option<Arc<dyn Fs>>,
3832 cx: &AsyncApp,
3833 ) {
3834 let Some(fs) = fs else {
3835 return;
3836 };
3837
3838 match params {
3839 Some(acp_thread::SelectedPermissionParams::Terminal {
3840 patterns: sub_patterns,
3841 }) => {
3842 debug_assert!(
3843 !sub_patterns.is_empty(),
3844 "empty sub_patterns for tool {tool} — callers should pass None instead"
3845 );
3846 let tool = tool.to_string();
3847 let sub_patterns = sub_patterns.clone();
3848 cx.update(|cx| {
3849 update_settings_file(fs, cx, move |settings, _| {
3850 let agent = settings.agent.get_or_insert_default();
3851 for pattern in sub_patterns {
3852 match mode {
3853 ToolPermissionMode::Allow => {
3854 agent.add_tool_allow_pattern(&tool, pattern);
3855 }
3856 ToolPermissionMode::Deny => {
3857 agent.add_tool_deny_pattern(&tool, pattern);
3858 }
3859 // If there's no matching pattern this will
3860 // default to confirm, so falling through is
3861 // fine here.
3862 ToolPermissionMode::Confirm => (),
3863 }
3864 }
3865 });
3866 });
3867 }
3868 None => {
3869 let tool = tool.to_string();
3870 cx.update(|cx| {
3871 update_settings_file(fs, cx, move |settings, _| {
3872 settings
3873 .agent
3874 .get_or_insert_default()
3875 .set_tool_default_permission(&tool, mode);
3876 });
3877 });
3878 }
3879 }
3880 }
3881}
3882
3883#[cfg(any(test, feature = "test-support"))]
3884pub struct ToolCallEventStreamReceiver(mpsc::UnboundedReceiver<Result<ThreadEvent>>);
3885
3886#[cfg(any(test, feature = "test-support"))]
3887impl ToolCallEventStreamReceiver {
3888 pub async fn expect_authorization(&mut self) -> ToolCallAuthorization {
3889 let event = self.0.next().await;
3890 if let Some(Ok(ThreadEvent::ToolCallAuthorization(auth))) = event {
3891 auth
3892 } else {
3893 panic!("Expected ToolCallAuthorization but got: {:?}", event);
3894 }
3895 }
3896
3897 pub async fn expect_update_fields(&mut self) -> acp::ToolCallUpdateFields {
3898 let event = self.0.next().await;
3899 if let Some(Ok(ThreadEvent::ToolCallUpdate(acp_thread::ToolCallUpdate::UpdateFields(
3900 update,
3901 )))) = event
3902 {
3903 update.fields
3904 } else {
3905 panic!("Expected update fields but got: {:?}", event);
3906 }
3907 }
3908
3909 pub async fn expect_diff(&mut self) -> Entity<acp_thread::Diff> {
3910 let event = self.0.next().await;
3911 if let Some(Ok(ThreadEvent::ToolCallUpdate(acp_thread::ToolCallUpdate::UpdateDiff(
3912 update,
3913 )))) = event
3914 {
3915 update.diff
3916 } else {
3917 panic!("Expected diff but got: {:?}", event);
3918 }
3919 }
3920
3921 pub async fn expect_terminal(&mut self) -> Entity<acp_thread::Terminal> {
3922 let event = self.0.next().await;
3923 if let Some(Ok(ThreadEvent::ToolCallUpdate(acp_thread::ToolCallUpdate::UpdateTerminal(
3924 update,
3925 )))) = event
3926 {
3927 update.terminal
3928 } else {
3929 panic!("Expected terminal but got: {:?}", event);
3930 }
3931 }
3932
3933 pub async fn expect_plan(&mut self) -> acp::Plan {
3934 let event = self.0.next().await;
3935 if let Some(Ok(ThreadEvent::Plan(plan))) = event {
3936 plan
3937 } else {
3938 panic!("Expected plan but got: {:?}", event);
3939 }
3940 }
3941}
3942
3943#[cfg(any(test, feature = "test-support"))]
3944impl std::ops::Deref for ToolCallEventStreamReceiver {
3945 type Target = mpsc::UnboundedReceiver<Result<ThreadEvent>>;
3946
3947 fn deref(&self) -> &Self::Target {
3948 &self.0
3949 }
3950}
3951
3952#[cfg(any(test, feature = "test-support"))]
3953impl std::ops::DerefMut for ToolCallEventStreamReceiver {
3954 fn deref_mut(&mut self) -> &mut Self::Target {
3955 &mut self.0
3956 }
3957}
3958
3959impl From<&str> for UserMessageContent {
3960 fn from(text: &str) -> Self {
3961 Self::Text(text.into())
3962 }
3963}
3964
3965impl From<String> for UserMessageContent {
3966 fn from(text: String) -> Self {
3967 Self::Text(text)
3968 }
3969}
3970
3971impl UserMessageContent {
3972 pub fn from_content_block(value: acp::ContentBlock, path_style: PathStyle) -> Self {
3973 match value {
3974 acp::ContentBlock::Text(text_content) => Self::Text(text_content.text),
3975 acp::ContentBlock::Image(image_content) => Self::Image(convert_image(image_content)),
3976 acp::ContentBlock::Audio(_) => {
3977 // TODO
3978 Self::Text("[audio]".to_string())
3979 }
3980 acp::ContentBlock::ResourceLink(resource_link) => {
3981 match MentionUri::parse(&resource_link.uri, path_style) {
3982 Ok(uri) => Self::Mention {
3983 uri,
3984 content: String::new(),
3985 },
3986 Err(err) => {
3987 log::error!("Failed to parse mention link: {}", err);
3988 Self::Text(format!("[{}]({})", resource_link.name, resource_link.uri))
3989 }
3990 }
3991 }
3992 acp::ContentBlock::Resource(resource) => match resource.resource {
3993 acp::EmbeddedResourceResource::TextResourceContents(resource) => {
3994 match MentionUri::parse(&resource.uri, path_style) {
3995 Ok(uri) => Self::Mention {
3996 uri,
3997 content: resource.text,
3998 },
3999 Err(err) => {
4000 log::error!("Failed to parse mention link: {}", err);
4001 Self::Text(
4002 MarkdownCodeBlock {
4003 tag: &resource.uri,
4004 text: &resource.text,
4005 }
4006 .to_string(),
4007 )
4008 }
4009 }
4010 }
4011 acp::EmbeddedResourceResource::BlobResourceContents(_) => {
4012 // TODO
4013 Self::Text("[blob]".to_string())
4014 }
4015 other => {
4016 log::warn!("Unexpected content type: {:?}", other);
4017 Self::Text("[unknown]".to_string())
4018 }
4019 },
4020 other => {
4021 log::warn!("Unexpected content type: {:?}", other);
4022 Self::Text("[unknown]".to_string())
4023 }
4024 }
4025 }
4026}
4027
4028impl From<UserMessageContent> for acp::ContentBlock {
4029 fn from(content: UserMessageContent) -> Self {
4030 match content {
4031 UserMessageContent::Text(text) => text.into(),
4032 UserMessageContent::Image(image) => {
4033 acp::ContentBlock::Image(acp::ImageContent::new(image.source, "image/png"))
4034 }
4035 UserMessageContent::Mention { uri, content } => acp::ContentBlock::Resource(
4036 acp::EmbeddedResource::new(acp::EmbeddedResourceResource::TextResourceContents(
4037 acp::TextResourceContents::new(content, uri.to_uri().to_string()),
4038 )),
4039 ),
4040 }
4041 }
4042}
4043
4044fn convert_image(image_content: acp::ImageContent) -> LanguageModelImage {
4045 LanguageModelImage {
4046 source: image_content.data.into(),
4047 size: None,
4048 }
4049}
4050
4051#[cfg(test)]
4052mod tests {
4053 use super::*;
4054 use gpui::TestAppContext;
4055 use language_model::LanguageModelToolUseId;
4056 use language_model::fake_provider::FakeLanguageModel;
4057 use serde_json::json;
4058 use std::sync::Arc;
4059
4060 async fn setup_thread_for_test(cx: &mut TestAppContext) -> (Entity<Thread>, ThreadEventStream) {
4061 cx.update(|cx| {
4062 let settings_store = settings::SettingsStore::test(cx);
4063 cx.set_global(settings_store);
4064 });
4065
4066 let fs = fs::FakeFs::new(cx.background_executor.clone());
4067 let templates = Templates::new();
4068 let project = Project::test(fs.clone(), [], cx).await;
4069
4070 cx.update(|cx| {
4071 let project_context = cx.new(|_cx| prompt_store::ProjectContext::default());
4072 let context_server_store = project.read(cx).context_server_store();
4073 let context_server_registry =
4074 cx.new(|cx| ContextServerRegistry::new(context_server_store, cx));
4075
4076 let thread = cx.new(|cx| {
4077 Thread::new(
4078 project,
4079 project_context,
4080 context_server_registry,
4081 templates,
4082 None,
4083 cx,
4084 )
4085 });
4086
4087 let (event_tx, _event_rx) = mpsc::unbounded();
4088 let event_stream = ThreadEventStream(event_tx);
4089
4090 (thread, event_stream)
4091 })
4092 }
4093
4094 fn setup_parent_with_subagents(
4095 cx: &mut TestAppContext,
4096 parent: &Entity<Thread>,
4097 count: usize,
4098 ) -> Vec<Entity<Thread>> {
4099 cx.update(|cx| {
4100 let mut subagents = Vec::new();
4101 for _ in 0..count {
4102 let subagent = cx.new(|cx| Thread::new_subagent(parent, cx));
4103 parent.update(cx, |thread, _cx| {
4104 thread.register_running_subagent(subagent.downgrade());
4105 });
4106 subagents.push(subagent);
4107 }
4108 subagents
4109 })
4110 }
4111
4112 #[gpui::test]
4113 async fn test_set_model_propagates_to_subagents(cx: &mut TestAppContext) {
4114 let (parent, _event_stream) = setup_thread_for_test(cx).await;
4115 let subagents = setup_parent_with_subagents(cx, &parent, 2);
4116
4117 let new_model: Arc<dyn LanguageModel> = Arc::new(FakeLanguageModel::with_id_and_thinking(
4118 "test-provider",
4119 "new-model",
4120 "New Model",
4121 false,
4122 ));
4123
4124 cx.update(|cx| {
4125 parent.update(cx, |thread, cx| {
4126 thread.set_model(new_model, cx);
4127 });
4128
4129 for subagent in &subagents {
4130 let subagent_model_id = subagent.read(cx).model().unwrap().id();
4131 assert_eq!(
4132 subagent_model_id.0.as_ref(),
4133 "new-model",
4134 "Subagent model should match parent model after set_model"
4135 );
4136 }
4137 });
4138 }
4139
4140 #[gpui::test]
4141 async fn test_set_summarization_model_propagates_to_subagents(cx: &mut TestAppContext) {
4142 let (parent, _event_stream) = setup_thread_for_test(cx).await;
4143 let subagents = setup_parent_with_subagents(cx, &parent, 2);
4144
4145 let summary_model: Arc<dyn LanguageModel> =
4146 Arc::new(FakeLanguageModel::with_id_and_thinking(
4147 "test-provider",
4148 "summary-model",
4149 "Summary Model",
4150 false,
4151 ));
4152
4153 cx.update(|cx| {
4154 parent.update(cx, |thread, cx| {
4155 thread.set_summarization_model(Some(summary_model), cx);
4156 });
4157
4158 for subagent in &subagents {
4159 let subagent_summary_id = subagent.read(cx).summarization_model().unwrap().id();
4160 assert_eq!(
4161 subagent_summary_id.0.as_ref(),
4162 "summary-model",
4163 "Subagent summarization model should match parent after set_summarization_model"
4164 );
4165 }
4166 });
4167 }
4168
4169 #[gpui::test]
4170 async fn test_set_thinking_enabled_propagates_to_subagents(cx: &mut TestAppContext) {
4171 let (parent, _event_stream) = setup_thread_for_test(cx).await;
4172 let subagents = setup_parent_with_subagents(cx, &parent, 2);
4173
4174 cx.update(|cx| {
4175 parent.update(cx, |thread, cx| {
4176 thread.set_thinking_enabled(true, cx);
4177 });
4178
4179 for subagent in &subagents {
4180 assert!(
4181 subagent.read(cx).thinking_enabled(),
4182 "Subagent thinking should be enabled after parent enables it"
4183 );
4184 }
4185
4186 parent.update(cx, |thread, cx| {
4187 thread.set_thinking_enabled(false, cx);
4188 });
4189
4190 for subagent in &subagents {
4191 assert!(
4192 !subagent.read(cx).thinking_enabled(),
4193 "Subagent thinking should be disabled after parent disables it"
4194 );
4195 }
4196 });
4197 }
4198
4199 #[gpui::test]
4200 async fn test_set_thinking_effort_propagates_to_subagents(cx: &mut TestAppContext) {
4201 let (parent, _event_stream) = setup_thread_for_test(cx).await;
4202 let subagents = setup_parent_with_subagents(cx, &parent, 2);
4203
4204 cx.update(|cx| {
4205 parent.update(cx, |thread, cx| {
4206 thread.set_thinking_effort(Some("high".to_string()), cx);
4207 });
4208
4209 for subagent in &subagents {
4210 assert_eq!(
4211 subagent.read(cx).thinking_effort().map(|s| s.as_str()),
4212 Some("high"),
4213 "Subagent thinking effort should match parent"
4214 );
4215 }
4216
4217 parent.update(cx, |thread, cx| {
4218 thread.set_thinking_effort(None, cx);
4219 });
4220
4221 for subagent in &subagents {
4222 assert_eq!(
4223 subagent.read(cx).thinking_effort(),
4224 None,
4225 "Subagent thinking effort should be None after parent clears it"
4226 );
4227 }
4228 });
4229 }
4230
4231 #[gpui::test]
4232 async fn test_set_speed_propagates_to_subagents(cx: &mut TestAppContext) {
4233 let (parent, _event_stream) = setup_thread_for_test(cx).await;
4234 let subagents = setup_parent_with_subagents(cx, &parent, 2);
4235
4236 cx.update(|cx| {
4237 parent.update(cx, |thread, cx| {
4238 thread.set_speed(Speed::Fast, cx);
4239 });
4240
4241 for subagent in &subagents {
4242 assert_eq!(
4243 subagent.read(cx).speed(),
4244 Some(Speed::Fast),
4245 "Subagent speed should match parent after set_speed"
4246 );
4247 }
4248 });
4249 }
4250
4251 #[gpui::test]
4252 async fn test_dropped_subagent_does_not_panic(cx: &mut TestAppContext) {
4253 let (parent, _event_stream) = setup_thread_for_test(cx).await;
4254 let subagents = setup_parent_with_subagents(cx, &parent, 1);
4255
4256 // Drop the subagent so the WeakEntity can no longer be upgraded
4257 drop(subagents);
4258
4259 // Should not panic even though the subagent was dropped
4260 cx.update(|cx| {
4261 parent.update(cx, |thread, cx| {
4262 thread.set_thinking_enabled(true, cx);
4263 thread.set_speed(Speed::Fast, cx);
4264 thread.set_thinking_effort(Some("high".to_string()), cx);
4265 });
4266 });
4267 }
4268
4269 #[gpui::test]
4270 async fn test_handle_tool_use_json_parse_error_adds_tool_use_to_content(
4271 cx: &mut TestAppContext,
4272 ) {
4273 let (thread, event_stream) = setup_thread_for_test(cx).await;
4274
4275 cx.update(|cx| {
4276 thread.update(cx, |thread, _cx| {
4277 let tool_use_id = LanguageModelToolUseId::from("test_tool_id");
4278 let tool_name: Arc<str> = Arc::from("test_tool");
4279 let raw_input: Arc<str> = Arc::from("{invalid json");
4280 let json_parse_error = "expected value at line 1 column 1".to_string();
4281
4282 // Call the function under test
4283 let result = thread.handle_tool_use_json_parse_error_event(
4284 tool_use_id.clone(),
4285 tool_name.clone(),
4286 raw_input.clone(),
4287 json_parse_error,
4288 &event_stream,
4289 );
4290
4291 // Verify the result is an error
4292 assert!(result.is_error);
4293 assert_eq!(result.tool_use_id, tool_use_id);
4294 assert_eq!(result.tool_name, tool_name);
4295 assert!(matches!(
4296 result.content,
4297 LanguageModelToolResultContent::Text(_)
4298 ));
4299
4300 // Verify the tool use was added to the message content
4301 {
4302 let last_message = thread.pending_message();
4303 assert_eq!(
4304 last_message.content.len(),
4305 1,
4306 "Should have one tool_use in content"
4307 );
4308
4309 match &last_message.content[0] {
4310 AgentMessageContent::ToolUse(tool_use) => {
4311 assert_eq!(tool_use.id, tool_use_id);
4312 assert_eq!(tool_use.name, tool_name);
4313 assert_eq!(tool_use.raw_input, raw_input.to_string());
4314 assert!(tool_use.is_input_complete);
4315 // Should fall back to empty object for invalid JSON
4316 assert_eq!(tool_use.input, json!({}));
4317 }
4318 _ => panic!("Expected ToolUse content"),
4319 }
4320 }
4321
4322 // Insert the tool result (simulating what the caller does)
4323 thread
4324 .pending_message()
4325 .tool_results
4326 .insert(result.tool_use_id.clone(), result);
4327
4328 // Verify the tool result was added
4329 let last_message = thread.pending_message();
4330 assert_eq!(
4331 last_message.tool_results.len(),
4332 1,
4333 "Should have one tool_result"
4334 );
4335 assert!(last_message.tool_results.contains_key(&tool_use_id));
4336 });
4337 });
4338 }
4339}