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