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