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