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