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