use rmcp::handler::server::ServerHandler;
use rmcp::model::*;
use rmcp::service::{RequestContext, RoleServer};
use rmcp::ErrorData;
use serde_json::Value;
use crate::tools::{CrpMode, LeanCtxServer};
impl ServerHandler for LeanCtxServer {
fn get_info(&self) -> ServerInfo {
let capabilities = ServerCapabilities::builder().enable_tools().build();
let instructions = crate::instructions::build_instructions(self.crp_mode);
InitializeResult::new(capabilities)
.with_server_info(Implementation::new("lean-ctx", env!("CARGO_PKG_VERSION")))
.with_instructions(instructions)
}
async fn initialize(
&self,
request: InitializeRequestParams,
_context: RequestContext<RoleServer>,
) -> Result<InitializeResult, ErrorData> {
let name = request.client_info.name.clone();
tracing::info!("MCP client connected: {:?}", name);
*self.client_name.write().await = name.clone();
tokio::task::spawn_blocking(|| {
if let Some(home) = dirs::home_dir() {
let _ = crate::rules_inject::inject_all_rules(&home);
}
crate::hooks::refresh_installed_hooks();
crate::core::version_check::check_background();
});
let instructions =
crate::instructions::build_instructions_with_client(self.crp_mode, &name);
let capabilities = ServerCapabilities::builder().enable_tools().build();
Ok(InitializeResult::new(capabilities)
.with_server_info(Implementation::new("lean-ctx", env!("CARGO_PKG_VERSION")))
.with_instructions(instructions))
}
async fn list_tools(
&self,
_request: Option<PaginatedRequestParams>,
_context: RequestContext<RoleServer>,
) -> Result<ListToolsResult, ErrorData> {
let all_tools = if std::env::var("LEAN_CTX_UNIFIED").is_ok()
&& std::env::var("LEAN_CTX_FULL_TOOLS").is_err()
{
crate::tool_defs::unified_tool_defs()
} else {
crate::tool_defs::granular_tool_defs()
};
let disabled = crate::core::config::Config::load().disabled_tools_effective();
let tools = if disabled.is_empty() {
all_tools
} else {
all_tools
.into_iter()
.filter(|t| !disabled.iter().any(|d| t.name.as_ref() == d.as_str()))
.collect()
};
Ok(ListToolsResult {
tools,
..Default::default()
})
}
async fn call_tool(
&self,
request: CallToolRequestParams,
_context: RequestContext<RoleServer>,
) -> Result<CallToolResult, ErrorData> {
self.check_idle_expiry().await;
let original_name = request.name.as_ref().to_string();
let (resolved_name, resolved_args) = if original_name == "ctx" {
let sub = request
.arguments
.as_ref()
.and_then(|a| a.get("tool"))
.and_then(|v| v.as_str())
.map(|s| s.to_string())
.ok_or_else(|| {
ErrorData::invalid_params("'tool' is required for ctx meta-tool", None)
})?;
let tool_name = if sub.starts_with("ctx_") {
sub
} else {
format!("ctx_{sub}")
};
let mut args = request.arguments.unwrap_or_default();
args.remove("tool");
(tool_name, Some(args))
} else {
(original_name, request.arguments)
};
let name = resolved_name.as_str();
let args = &resolved_args;
let auto_context = {
let task = {
let session = self.session.read().await;
session.task.as_ref().map(|t| t.description.clone())
};
let project_root = {
let session = self.session.read().await;
session.project_root.clone()
};
let mut cache = self.cache.write().await;
crate::tools::autonomy::session_lifecycle_pre_hook(
&self.autonomy,
name,
&mut cache,
task.as_deref(),
project_root.as_deref(),
self.crp_mode,
)
};
let throttle_result = {
let fp = args
.as_ref()
.map(|a| {
crate::core::loop_detection::LoopDetector::fingerprint(
&serde_json::Value::Object(a.clone()),
)
})
.unwrap_or_default();
let mut detector = self.loop_detector.write().await;
let is_search = crate::core::loop_detection::LoopDetector::is_search_tool(name);
let is_search_shell = name == "ctx_shell" && {
let cmd = args
.as_ref()
.and_then(|a| a.get("command"))
.and_then(|v| v.as_str())
.unwrap_or("");
crate::core::loop_detection::LoopDetector::is_search_shell_command(cmd)
};
if is_search || is_search_shell {
let search_pattern = args.as_ref().and_then(|a| {
a.get("pattern")
.or_else(|| a.get("query"))
.and_then(|v| v.as_str())
});
let shell_pattern = if is_search_shell {
args.as_ref()
.and_then(|a| a.get("command"))
.and_then(|v| v.as_str())
.and_then(extract_search_pattern_from_command)
} else {
None
};
let pat = search_pattern.or(shell_pattern.as_deref());
detector.record_search(name, &fp, pat)
} else {
detector.record_call(name, &fp)
}
};
if throttle_result.level == crate::core::loop_detection::ThrottleLevel::Blocked {
let msg = throttle_result.message.unwrap_or_default();
return Ok(CallToolResult::success(vec![Content::text(msg)]));
}
let throttle_warning =
if throttle_result.level == crate::core::loop_detection::ThrottleLevel::Reduced {
throttle_result.message.clone()
} else {
None
};
let tool_start = std::time::Instant::now();
let result_text = match name {
"ctx_read" => {
let path = match get_str(args, "path") {
Some(p) => self.resolve_path(&p).await,
None => return Err(ErrorData::invalid_params("path is required", None)),
};
let current_task = {
let session = self.session.read().await;
session.task.as_ref().map(|t| t.description.clone())
};
let task_ref = current_task.as_deref();
let mut mode = match get_str(args, "mode") {
Some(m) => m,
None => {
let cache = self.cache.read().await;
crate::tools::ctx_smart_read::select_mode_with_task(&cache, &path, task_ref)
}
};
let fresh = get_bool(args, "fresh").unwrap_or(false);
let start_line = get_int(args, "start_line");
if let Some(sl) = start_line {
let sl = sl.max(1_i64);
mode = format!("lines:{sl}-999999");
}
let stale = self.is_prompt_cache_stale().await;
let effective_mode = LeanCtxServer::upgrade_mode_if_stale(&mode, stale).to_string();
let mut cache = self.cache.write().await;
let output = if fresh {
crate::tools::ctx_read::handle_fresh_with_task(
&mut cache,
&path,
&effective_mode,
self.crp_mode,
task_ref,
)
} else {
crate::tools::ctx_read::handle_with_task(
&mut cache,
&path,
&effective_mode,
self.crp_mode,
task_ref,
)
};
let stale_note = if effective_mode != mode {
format!("[cache stale, {mode}→{effective_mode}]\n")
} else {
String::new()
};
let original = cache.get(&path).map_or(0, |e| e.original_tokens);
let output_tokens = crate::core::tokens::count_tokens(&output);
let saved = original.saturating_sub(output_tokens);
let is_cache_hit = output.contains(" cached ");
let output = format!("{stale_note}{output}");
let file_ref = cache.file_ref_map().get(&path).cloned();
drop(cache);
let mut ensured_root: Option<String> = None;
{
let mut session = self.session.write().await;
session.touch_file(&path, file_ref.as_deref(), &effective_mode, original);
if is_cache_hit {
session.record_cache_hit();
}
let root_missing = session
.project_root
.as_deref()
.map(|r| r.trim().is_empty())
.unwrap_or(true);
if root_missing {
if let Some(root) = crate::core::protocol::detect_project_root(&path) {
session.project_root = Some(root.clone());
ensured_root = Some(root.clone());
let mut current = self.agent_id.write().await;
if current.is_none() {
let mut registry =
crate::core::agents::AgentRegistry::load_or_create();
registry.cleanup_stale(24);
let role = std::env::var("LEAN_CTX_AGENT_ROLE").ok();
let id = registry.register("mcp", role.as_deref(), &root);
let _ = registry.save();
*current = Some(id);
}
}
}
}
if let Some(root) = ensured_root.as_deref() {
crate::core::index_orchestrator::ensure_all_background(root);
}
self.record_call("ctx_read", original, saved, Some(mode.clone()))
.await;
{
let sig =
crate::core::mode_predictor::FileSignature::from_path(&path, original);
let density = if output_tokens > 0 {
original as f64 / output_tokens as f64
} else {
1.0
};
let outcome = crate::core::mode_predictor::ModeOutcome {
mode: mode.clone(),
tokens_in: original,
tokens_out: output_tokens,
density: density.min(1.0),
};
let mut predictor = crate::core::mode_predictor::ModePredictor::new();
predictor.record(sig, outcome);
predictor.save();
let ext = std::path::Path::new(&path)
.extension()
.and_then(|e| e.to_str())
.unwrap_or("")
.to_string();
let thresholds = crate::core::adaptive_thresholds::thresholds_for_path(&path);
let cache = self.cache.read().await;
let stats = cache.get_stats();
let feedback_outcome = crate::core::feedback::CompressionOutcome {
session_id: format!("{}", std::process::id()),
language: ext,
entropy_threshold: thresholds.bpe_entropy,
jaccard_threshold: thresholds.jaccard,
total_turns: stats.total_reads as u32,
tokens_saved: saved as u64,
tokens_original: original as u64,
cache_hits: stats.cache_hits as u32,
total_reads: stats.total_reads as u32,
task_completed: true,
timestamp: chrono::Local::now().to_rfc3339(),
};
drop(cache);
let mut store = crate::core::feedback::FeedbackStore::load();
store.record_outcome(feedback_outcome);
}
output
}
"ctx_multi_read" => {
let raw_paths = get_str_array(args, "paths")
.ok_or_else(|| ErrorData::invalid_params("paths array is required", None))?;
let mut paths = Vec::with_capacity(raw_paths.len());
for p in raw_paths {
paths.push(self.resolve_path(&p).await);
}
let mode = get_str(args, "mode").unwrap_or_else(|| "full".to_string());
let current_task = {
let session = self.session.read().await;
session.task.as_ref().map(|t| t.description.clone())
};
let mut cache = self.cache.write().await;
let output = crate::tools::ctx_multi_read::handle_with_task(
&mut cache,
&paths,
&mode,
self.crp_mode,
current_task.as_deref(),
);
let mut total_original: usize = 0;
for path in &paths {
total_original = total_original
.saturating_add(cache.get(path).map(|e| e.original_tokens).unwrap_or(0));
}
let tokens = crate::core::tokens::count_tokens(&output);
drop(cache);
self.record_call(
"ctx_multi_read",
total_original,
total_original.saturating_sub(tokens),
Some(mode),
)
.await;
output
}
"ctx_tree" => {
let path = self
.resolve_path(&get_str(args, "path").unwrap_or_else(|| ".".to_string()))
.await;
let depth = get_int(args, "depth").unwrap_or(3) as usize;
let show_hidden = get_bool(args, "show_hidden").unwrap_or(false);
let (result, original) = crate::tools::ctx_tree::handle(&path, depth, show_hidden);
let sent = crate::core::tokens::count_tokens(&result);
let saved = original.saturating_sub(sent);
self.record_call("ctx_tree", original, saved, None).await;
let savings_note = if saved > 0 {
format!("\n[saved {saved} tokens vs native ls]")
} else {
String::new()
};
format!("{result}{savings_note}")
}
"ctx_shell" => {
let command = get_str(args, "command")
.ok_or_else(|| ErrorData::invalid_params("command is required", None))?;
if let Some(rejection) = crate::tools::ctx_shell::validate_command(&command) {
self.record_call("ctx_shell", 0, 0, None).await;
return Ok(CallToolResult::success(vec![Content::text(rejection)]));
}
let explicit_cwd = get_str(args, "cwd");
let effective_cwd = {
let session = self.session.read().await;
session.effective_cwd(explicit_cwd.as_deref())
};
let ensured_root = {
let mut session = self.session.write().await;
session.update_shell_cwd(&command);
let root_missing = session
.project_root
.as_deref()
.map(|r| r.trim().is_empty())
.unwrap_or(true);
if !root_missing {
None
} else {
let home = dirs::home_dir().map(|h| h.to_string_lossy().to_string());
crate::core::protocol::detect_project_root(&effective_cwd).and_then(|r| {
if home.as_deref() == Some(r.as_str()) {
None
} else {
session.project_root = Some(r.clone());
Some(r)
}
})
}
};
if let Some(root) = ensured_root.as_deref() {
crate::core::index_orchestrator::ensure_all_background(root);
let mut current = self.agent_id.write().await;
if current.is_none() {
let mut registry = crate::core::agents::AgentRegistry::load_or_create();
registry.cleanup_stale(24);
let role = std::env::var("LEAN_CTX_AGENT_ROLE").ok();
let id = registry.register("mcp", role.as_deref(), root);
let _ = registry.save();
*current = Some(id);
}
}
let raw = get_bool(args, "raw").unwrap_or(false)
|| std::env::var("LEAN_CTX_DISABLED").is_ok();
let cmd_clone = command.clone();
let cwd_clone = effective_cwd.clone();
let (output, real_exit_code) =
tokio::task::spawn_blocking(move || execute_command_in(&cmd_clone, &cwd_clone))
.await
.unwrap_or_else(|e| (format!("ERROR: shell task failed: {e}"), 1));
if raw {
let original = crate::core::tokens::count_tokens(&output);
self.record_call("ctx_shell", original, 0, None).await;
output
} else {
let result = crate::tools::ctx_shell::handle(&command, &output, self.crp_mode);
let original = crate::core::tokens::count_tokens(&output);
let sent = crate::core::tokens::count_tokens(&result);
let saved = original.saturating_sub(sent);
self.record_call("ctx_shell", original, saved, None).await;
let cfg = crate::core::config::Config::load();
let tee_hint = match cfg.tee_mode {
crate::core::config::TeeMode::Always => {
crate::shell::save_tee(&command, &output)
.map(|p| format!("\n[full output: {p}]"))
.unwrap_or_default()
}
crate::core::config::TeeMode::Failures
if !output.trim().is_empty() && output.contains("error")
|| output.contains("Error")
|| output.contains("ERROR") =>
{
crate::shell::save_tee(&command, &output)
.map(|p| format!("\n[full output: {p}]"))
.unwrap_or_default()
}
_ => String::new(),
};
let savings_note = if saved > 0 {
format!("\n[saved {saved} tokens vs native Shell]")
} else {
String::new()
};
{
let sess = self.session.read().await;
let root = sess.project_root.clone();
let sid = sess.id.clone();
let files: Vec<String> = sess
.files_touched
.iter()
.map(|ft| ft.path.clone())
.collect();
drop(sess);
if let Some(ref root) = root {
let mut store = crate::core::gotcha_tracker::GotchaStore::load(root);
if real_exit_code != 0 {
store.detect_error(&output, &command, real_exit_code, &files, &sid);
} else {
let relevant = store.top_relevant(&files, 7);
let relevant_ids: Vec<String> =
relevant.iter().map(|g| g.id.clone()).collect();
for gid in &relevant_ids {
store.mark_prevented(gid);
}
if store.try_resolve_pending(&command, &files, &sid).is_some() {
store.cross_session_boost();
}
let promotions = store.check_promotions();
if !promotions.is_empty() {
let mut knowledge =
crate::core::knowledge::ProjectKnowledge::load_or_create(
root,
);
for (cat, trigger, resolution, conf) in &promotions {
knowledge.remember(
&format!("gotcha-{cat}"),
trigger,
resolution,
&sid,
*conf,
);
}
let _ = knowledge.save();
}
}
let _ = store.save(root);
}
}
format!("{result}{savings_note}{tee_hint}")
}
}
"ctx_search" => {
let pattern = get_str(args, "pattern")
.ok_or_else(|| ErrorData::invalid_params("pattern is required", None))?;
let path = self
.resolve_path(&get_str(args, "path").unwrap_or_else(|| ".".to_string()))
.await;
let ext = get_str(args, "ext");
let max = get_int(args, "max_results").unwrap_or(20) as usize;
let no_gitignore = get_bool(args, "ignore_gitignore").unwrap_or(false);
let crp = self.crp_mode;
let respect = !no_gitignore;
let search_result = tokio::time::timeout(
std::time::Duration::from_secs(30),
tokio::task::spawn_blocking(move || {
crate::tools::ctx_search::handle(
&pattern,
&path,
ext.as_deref(),
max,
crp,
respect,
)
}),
)
.await;
let (result, original) = match search_result {
Ok(Ok(r)) => r,
Ok(Err(e)) => {
return Err(ErrorData::internal_error(
format!("search task failed: {e}"),
None,
))
}
Err(_) => {
let msg = "ctx_search timed out after 30s. Try narrowing the search:\n\
• Use a more specific pattern\n\
• Specify ext= to limit file types\n\
• Specify a subdirectory in path=";
self.record_call("ctx_search", 0, 0, None).await;
return Ok(CallToolResult::success(vec![Content::text(msg)]));
}
};
let sent = crate::core::tokens::count_tokens(&result);
let saved = original.saturating_sub(sent);
self.record_call("ctx_search", original, saved, None).await;
let savings_note = if saved > 0 {
format!("\n[saved {saved} tokens vs native Grep]")
} else {
String::new()
};
format!("{result}{savings_note}")
}
"ctx_compress" => {
let include_sigs = get_bool(args, "include_signatures").unwrap_or(true);
let cache = self.cache.read().await;
let result =
crate::tools::ctx_compress::handle(&cache, include_sigs, self.crp_mode);
drop(cache);
self.record_call("ctx_compress", 0, 0, None).await;
result
}
"ctx_benchmark" => {
let path = match get_str(args, "path") {
Some(p) => self.resolve_path(&p).await,
None => return Err(ErrorData::invalid_params("path is required", None)),
};
let action = get_str(args, "action").unwrap_or_default();
let result = if action == "project" {
let fmt = get_str(args, "format").unwrap_or_default();
let bench = crate::core::benchmark::run_project_benchmark(&path);
match fmt.as_str() {
"json" => crate::core::benchmark::format_json(&bench),
"markdown" | "md" => crate::core::benchmark::format_markdown(&bench),
_ => crate::core::benchmark::format_terminal(&bench),
}
} else {
crate::tools::ctx_benchmark::handle(&path, self.crp_mode)
};
self.record_call("ctx_benchmark", 0, 0, None).await;
result
}
"ctx_metrics" => {
let cache = self.cache.read().await;
let calls = self.tool_calls.read().await;
let result = crate::tools::ctx_metrics::handle(&cache, &calls, self.crp_mode);
drop(cache);
drop(calls);
self.record_call("ctx_metrics", 0, 0, None).await;
result
}
"ctx_analyze" => {
let path = match get_str(args, "path") {
Some(p) => self.resolve_path(&p).await,
None => return Err(ErrorData::invalid_params("path is required", None)),
};
let result = crate::tools::ctx_analyze::handle(&path, self.crp_mode);
self.record_call("ctx_analyze", 0, 0, None).await;
result
}
"ctx_discover" => {
let limit = get_int(args, "limit").unwrap_or(15) as usize;
let history = crate::cli::load_shell_history_pub();
let result = crate::tools::ctx_discover::discover_from_history(&history, limit);
self.record_call("ctx_discover", 0, 0, None).await;
result
}
"ctx_smart_read" => {
let path = match get_str(args, "path") {
Some(p) => self.resolve_path(&p).await,
None => return Err(ErrorData::invalid_params("path is required", None)),
};
let mut cache = self.cache.write().await;
let output = crate::tools::ctx_smart_read::handle(&mut cache, &path, self.crp_mode);
let original = cache.get(&path).map_or(0, |e| e.original_tokens);
let tokens = crate::core::tokens::count_tokens(&output);
drop(cache);
self.record_call(
"ctx_smart_read",
original,
original.saturating_sub(tokens),
Some("auto".to_string()),
)
.await;
output
}
"ctx_delta" => {
let path = match get_str(args, "path") {
Some(p) => self.resolve_path(&p).await,
None => return Err(ErrorData::invalid_params("path is required", None)),
};
let mut cache = self.cache.write().await;
let output = crate::tools::ctx_delta::handle(&mut cache, &path);
let original = cache.get(&path).map_or(0, |e| e.original_tokens);
let tokens = crate::core::tokens::count_tokens(&output);
drop(cache);
{
let mut session = self.session.write().await;
session.mark_modified(&path);
}
self.record_call(
"ctx_delta",
original,
original.saturating_sub(tokens),
Some("delta".to_string()),
)
.await;
output
}
"ctx_edit" => {
let path = match get_str(args, "path") {
Some(p) => self.resolve_path(&p).await,
None => return Err(ErrorData::invalid_params("path is required", None)),
};
let old_string = get_str(args, "old_string").unwrap_or_default();
let new_string = get_str(args, "new_string")
.ok_or_else(|| ErrorData::invalid_params("new_string is required", None))?;
let replace_all = args
.as_ref()
.and_then(|a| a.get("replace_all"))
.and_then(|v| v.as_bool())
.unwrap_or(false);
let create = args
.as_ref()
.and_then(|a| a.get("create"))
.and_then(|v| v.as_bool())
.unwrap_or(false);
let mut cache = self.cache.write().await;
let output = crate::tools::ctx_edit::handle(
&mut cache,
crate::tools::ctx_edit::EditParams {
path: path.clone(),
old_string,
new_string,
replace_all,
create,
},
);
drop(cache);
{
let mut session = self.session.write().await;
session.mark_modified(&path);
}
self.record_call("ctx_edit", 0, 0, None).await;
output
}
"ctx_dedup" => {
let action = get_str(args, "action").unwrap_or_default();
if action == "apply" {
let mut cache = self.cache.write().await;
let result = crate::tools::ctx_dedup::handle_action(&mut cache, &action);
drop(cache);
self.record_call("ctx_dedup", 0, 0, None).await;
result
} else {
let cache = self.cache.read().await;
let result = crate::tools::ctx_dedup::handle(&cache);
drop(cache);
self.record_call("ctx_dedup", 0, 0, None).await;
result
}
}
"ctx_fill" => {
let raw_paths = get_str_array(args, "paths")
.ok_or_else(|| ErrorData::invalid_params("paths array is required", None))?;
let mut paths = Vec::with_capacity(raw_paths.len());
for p in raw_paths {
paths.push(self.resolve_path(&p).await);
}
let budget = get_int(args, "budget")
.ok_or_else(|| ErrorData::invalid_params("budget is required", None))?
as usize;
let mut cache = self.cache.write().await;
let output =
crate::tools::ctx_fill::handle(&mut cache, &paths, budget, self.crp_mode);
drop(cache);
self.record_call("ctx_fill", 0, 0, Some(format!("budget:{budget}")))
.await;
output
}
"ctx_intent" => {
let query = get_str(args, "query")
.ok_or_else(|| ErrorData::invalid_params("query is required", None))?;
let root = get_str(args, "project_root").unwrap_or_else(|| ".".to_string());
let mut cache = self.cache.write().await;
let output =
crate::tools::ctx_intent::handle(&mut cache, &query, &root, self.crp_mode);
drop(cache);
{
let mut session = self.session.write().await;
session.set_task(&query, Some("intent"));
}
self.record_call("ctx_intent", 0, 0, Some("semantic".to_string()))
.await;
output
}
"ctx_response" => {
let text = get_str(args, "text")
.ok_or_else(|| ErrorData::invalid_params("text is required", None))?;
let output = crate::tools::ctx_response::handle(&text, self.crp_mode);
self.record_call("ctx_response", 0, 0, None).await;
output
}
"ctx_context" => {
let cache = self.cache.read().await;
let turn = self.call_count.load(std::sync::atomic::Ordering::Relaxed);
let result = crate::tools::ctx_context::handle_status(&cache, turn, self.crp_mode);
drop(cache);
self.record_call("ctx_context", 0, 0, None).await;
result
}
"ctx_graph" => {
let action = get_str(args, "action")
.ok_or_else(|| ErrorData::invalid_params("action is required", None))?;
let path = match get_str(args, "path") {
Some(p) => Some(self.resolve_path(&p).await),
None => None,
};
let root = self
.resolve_path(&get_str(args, "project_root").unwrap_or_else(|| ".".to_string()))
.await;
let mut cache = self.cache.write().await;
let result = crate::tools::ctx_graph::handle(
&action,
path.as_deref(),
&root,
&mut cache,
self.crp_mode,
);
drop(cache);
self.record_call("ctx_graph", 0, 0, Some(action)).await;
result
}
"ctx_cache" => {
let action = get_str(args, "action")
.ok_or_else(|| ErrorData::invalid_params("action is required", None))?;
let mut cache = self.cache.write().await;
let result = match action.as_str() {
"status" => {
let entries = cache.get_all_entries();
if entries.is_empty() {
"Cache empty — no files tracked.".to_string()
} else {
let mut lines = vec![format!("Cache: {} file(s)", entries.len())];
for (path, entry) in &entries {
let fref = cache
.file_ref_map()
.get(*path)
.map(|s| s.as_str())
.unwrap_or("F?");
lines.push(format!(
" {fref}={} [{}L, {}t, read {}x]",
crate::core::protocol::shorten_path(path),
entry.line_count,
entry.original_tokens,
entry.read_count
));
}
lines.join("\n")
}
}
"clear" => {
let count = cache.clear();
format!("Cache cleared — {count} file(s) removed. Next ctx_read will return full content.")
}
"invalidate" => {
let path = match get_str(args, "path") {
Some(p) => self.resolve_path(&p).await,
None => {
return Err(ErrorData::invalid_params(
"path is required for invalidate",
None,
))
}
};
if cache.invalidate(&path) {
format!(
"Invalidated cache for {}. Next ctx_read will return full content.",
crate::core::protocol::shorten_path(&path)
)
} else {
format!(
"{} was not in cache.",
crate::core::protocol::shorten_path(&path)
)
}
}
_ => "Unknown action. Use: status, clear, invalidate".to_string(),
};
drop(cache);
self.record_call("ctx_cache", 0, 0, Some(action)).await;
result
}
"ctx_session" => {
let action = get_str(args, "action")
.ok_or_else(|| ErrorData::invalid_params("action is required", None))?;
let value = get_str(args, "value");
let sid = get_str(args, "session_id");
let mut session = self.session.write().await;
let result = crate::tools::ctx_session::handle(
&mut session,
&action,
value.as_deref(),
sid.as_deref(),
);
drop(session);
self.record_call("ctx_session", 0, 0, Some(action)).await;
result
}
"ctx_knowledge" => {
let action = get_str(args, "action")
.ok_or_else(|| ErrorData::invalid_params("action is required", None))?;
let category = get_str(args, "category");
let key = get_str(args, "key");
let value = get_str(args, "value");
let query = get_str(args, "query");
let pattern_type = get_str(args, "pattern_type");
let examples = get_str_array(args, "examples");
let confidence: Option<f32> = args
.as_ref()
.and_then(|a| a.get("confidence"))
.and_then(|v| v.as_f64())
.map(|v| v as f32);
let session = self.session.read().await;
let session_id = session.id.clone();
let project_root = session.project_root.clone().unwrap_or_else(|| {
std::env::current_dir()
.map(|p| p.to_string_lossy().to_string())
.unwrap_or_else(|_| "unknown".to_string())
});
drop(session);
if action == "gotcha" {
let trigger = get_str(args, "trigger").unwrap_or_default();
let resolution = get_str(args, "resolution").unwrap_or_default();
let severity = get_str(args, "severity").unwrap_or_default();
let cat = category.as_deref().unwrap_or("convention");
if trigger.is_empty() || resolution.is_empty() {
self.record_call("ctx_knowledge", 0, 0, Some(action)).await;
return Ok(CallToolResult::success(vec![Content::text(
"ERROR: trigger and resolution are required for gotcha action",
)]));
}
let mut store = crate::core::gotcha_tracker::GotchaStore::load(&project_root);
let msg = match store.report_gotcha(
&trigger,
&resolution,
cat,
&severity,
&session_id,
) {
Some(gotcha) => {
let conf = (gotcha.confidence * 100.0) as u32;
let label = gotcha.category.short_label();
format!("Gotcha recorded: [{label}] {trigger} (confidence: {conf}%)")
}
None => format!(
"Gotcha noted: {trigger} (evicted by higher-confidence entries)"
),
};
let _ = store.save(&project_root);
self.record_call("ctx_knowledge", 0, 0, Some(action)).await;
return Ok(CallToolResult::success(vec![Content::text(msg)]));
}
let result = crate::tools::ctx_knowledge::handle(
&project_root,
&action,
category.as_deref(),
key.as_deref(),
value.as_deref(),
query.as_deref(),
&session_id,
pattern_type.as_deref(),
examples,
confidence,
);
self.record_call("ctx_knowledge", 0, 0, Some(action)).await;
result
}
"ctx_agent" => {
let action = get_str(args, "action")
.ok_or_else(|| ErrorData::invalid_params("action is required", None))?;
let agent_type = get_str(args, "agent_type");
let role = get_str(args, "role");
let message = get_str(args, "message");
let category = get_str(args, "category");
let to_agent = get_str(args, "to_agent");
let status = get_str(args, "status");
let session = self.session.read().await;
let project_root = session.project_root.clone().unwrap_or_else(|| {
std::env::current_dir()
.map(|p| p.to_string_lossy().to_string())
.unwrap_or_else(|_| "unknown".to_string())
});
drop(session);
let current_agent_id = self.agent_id.read().await.clone();
let result = crate::tools::ctx_agent::handle(
&action,
agent_type.as_deref(),
role.as_deref(),
&project_root,
current_agent_id.as_deref(),
message.as_deref(),
category.as_deref(),
to_agent.as_deref(),
status.as_deref(),
);
if action == "register" {
if let Some(id) = result.split(':').nth(1) {
let id = id.split_whitespace().next().unwrap_or("").to_string();
if !id.is_empty() {
*self.agent_id.write().await = Some(id);
}
}
}
self.record_call("ctx_agent", 0, 0, Some(action)).await;
result
}
"ctx_share" => {
let action = get_str(args, "action")
.ok_or_else(|| ErrorData::invalid_params("action is required", None))?;
let to_agent = get_str(args, "to_agent");
let paths = get_str(args, "paths");
let message = get_str(args, "message");
let from_agent = self.agent_id.read().await.clone();
let cache = self.cache.read().await;
let result = crate::tools::ctx_share::handle(
&action,
from_agent.as_deref(),
to_agent.as_deref(),
paths.as_deref(),
message.as_deref(),
&cache,
);
drop(cache);
self.record_call("ctx_share", 0, 0, Some(action)).await;
result
}
"ctx_overview" => {
let task = get_str(args, "task");
let resolved_path = match get_str(args, "path") {
Some(p) => Some(self.resolve_path(&p).await),
None => {
let session = self.session.read().await;
session.project_root.clone()
}
};
let cache = self.cache.read().await;
let result = crate::tools::ctx_overview::handle(
&cache,
task.as_deref(),
resolved_path.as_deref(),
self.crp_mode,
);
drop(cache);
self.record_call("ctx_overview", 0, 0, Some("overview".to_string()))
.await;
result
}
"ctx_preload" => {
let task = get_str(args, "task").unwrap_or_default();
let resolved_path = match get_str(args, "path") {
Some(p) => Some(self.resolve_path(&p).await),
None => {
let session = self.session.read().await;
session.project_root.clone()
}
};
let mut cache = self.cache.write().await;
let result = crate::tools::ctx_preload::handle(
&mut cache,
&task,
resolved_path.as_deref(),
self.crp_mode,
);
drop(cache);
self.record_call("ctx_preload", 0, 0, Some("preload".to_string()))
.await;
result
}
"ctx_wrapped" => {
let period = get_str(args, "period").unwrap_or_else(|| "week".to_string());
let result = crate::tools::ctx_wrapped::handle(&period);
self.record_call("ctx_wrapped", 0, 0, Some(period)).await;
result
}
"ctx_semantic_search" => {
let query = get_str(args, "query")
.ok_or_else(|| ErrorData::invalid_params("query is required", None))?;
let path = self
.resolve_path(&get_str(args, "path").unwrap_or_else(|| ".".to_string()))
.await;
let top_k = get_int(args, "top_k").unwrap_or(10) as usize;
let action = get_str(args, "action").unwrap_or_default();
let mode = get_str(args, "mode");
let languages = get_str_array(args, "languages");
let path_glob = get_str(args, "path_glob");
let result = if action == "reindex" {
crate::tools::ctx_semantic_search::handle_reindex(&path)
} else {
crate::tools::ctx_semantic_search::handle(
&query,
&path,
top_k,
self.crp_mode,
languages,
path_glob.as_deref(),
mode.as_deref(),
)
};
self.record_call("ctx_semantic_search", 0, 0, Some("semantic".to_string()))
.await;
result
}
"ctx_execute" => {
let action = get_str(args, "action").unwrap_or_default();
let result = if action == "batch" {
let items_str = get_str(args, "items").ok_or_else(|| {
ErrorData::invalid_params("items is required for batch", None)
})?;
let items: Vec<serde_json::Value> =
serde_json::from_str(&items_str).map_err(|e| {
ErrorData::invalid_params(format!("Invalid items JSON: {e}"), None)
})?;
let batch: Vec<(String, String)> = items
.iter()
.filter_map(|item| {
let lang = item.get("language")?.as_str()?.to_string();
let code = item.get("code")?.as_str()?.to_string();
Some((lang, code))
})
.collect();
crate::tools::ctx_execute::handle_batch(&batch)
} else if action == "file" {
let path = get_str(args, "path").ok_or_else(|| {
ErrorData::invalid_params("path is required for action=file", None)
})?;
let intent = get_str(args, "intent");
crate::tools::ctx_execute::handle_file(&path, intent.as_deref())
} else {
let language = get_str(args, "language")
.ok_or_else(|| ErrorData::invalid_params("language is required", None))?;
let code = get_str(args, "code")
.ok_or_else(|| ErrorData::invalid_params("code is required", None))?;
let intent = get_str(args, "intent");
let timeout = get_int(args, "timeout").map(|t| t as u64);
crate::tools::ctx_execute::handle(&language, &code, intent.as_deref(), timeout)
};
self.record_call("ctx_execute", 0, 0, Some(action)).await;
result
}
"ctx_symbol" => {
let sym_name = get_str(args, "name")
.ok_or_else(|| ErrorData::invalid_params("name is required", None))?;
let file = get_str(args, "file");
let kind = get_str(args, "kind");
let session = self.session.read().await;
let project_root = session
.project_root
.clone()
.unwrap_or_else(|| ".".to_string());
drop(session);
let (result, original) = crate::tools::ctx_symbol::handle(
&sym_name,
file.as_deref(),
kind.as_deref(),
&project_root,
);
let sent = crate::core::tokens::count_tokens(&result);
let saved = original.saturating_sub(sent);
self.record_call("ctx_symbol", original, saved, kind).await;
result
}
"ctx_graph_diagram" => {
let file = get_str(args, "file");
let depth = get_int(args, "depth").map(|d| d as usize);
let kind = get_str(args, "kind");
let session = self.session.read().await;
let project_root = session
.project_root
.clone()
.unwrap_or_else(|| ".".to_string());
drop(session);
let result = crate::tools::ctx_graph_diagram::handle(
file.as_deref(),
depth,
kind.as_deref(),
&project_root,
);
self.record_call("ctx_graph_diagram", 0, 0, kind).await;
result
}
"ctx_routes" => {
let method = get_str(args, "method");
let path_prefix = get_str(args, "path");
let session = self.session.read().await;
let project_root = session
.project_root
.clone()
.unwrap_or_else(|| ".".to_string());
drop(session);
let result = crate::tools::ctx_routes::handle(
method.as_deref(),
path_prefix.as_deref(),
&project_root,
);
self.record_call("ctx_routes", 0, 0, None).await;
result
}
"ctx_compress_memory" => {
let path = self
.resolve_path(
&get_str(args, "path")
.ok_or_else(|| ErrorData::invalid_params("path is required", None))?,
)
.await;
let result = crate::tools::ctx_compress_memory::handle(&path);
self.record_call("ctx_compress_memory", 0, 0, None).await;
result
}
"ctx_callers" => {
let symbol = get_str(args, "symbol")
.ok_or_else(|| ErrorData::invalid_params("symbol is required", None))?;
let file = get_str(args, "file");
let session = self.session.read().await;
let project_root = session
.project_root
.clone()
.unwrap_or_else(|| ".".to_string());
drop(session);
let result =
crate::tools::ctx_callers::handle(&symbol, file.as_deref(), &project_root);
self.record_call("ctx_callers", 0, 0, None).await;
result
}
"ctx_callees" => {
let symbol = get_str(args, "symbol")
.ok_or_else(|| ErrorData::invalid_params("symbol is required", None))?;
let file = get_str(args, "file");
let session = self.session.read().await;
let project_root = session
.project_root
.clone()
.unwrap_or_else(|| ".".to_string());
drop(session);
let result =
crate::tools::ctx_callees::handle(&symbol, file.as_deref(), &project_root);
self.record_call("ctx_callees", 0, 0, None).await;
result
}
"ctx_outline" => {
let path = self
.resolve_path(
&get_str(args, "path")
.ok_or_else(|| ErrorData::invalid_params("path is required", None))?,
)
.await;
let kind = get_str(args, "kind");
let (result, original) = crate::tools::ctx_outline::handle(&path, kind.as_deref());
let sent = crate::core::tokens::count_tokens(&result);
let saved = original.saturating_sub(sent);
self.record_call("ctx_outline", original, saved, kind).await;
result
}
_ => {
return Err(ErrorData::invalid_params(
format!("Unknown tool: {name}"),
None,
));
}
};
let mut result_text = result_text;
{
let config = crate::core::config::Config::load();
let density = crate::core::config::OutputDensity::effective(&config.output_density);
result_text = crate::core::protocol::compress_output(&result_text, &density);
}
if let Some(ctx) = auto_context {
result_text = format!("{ctx}\n\n{result_text}");
}
if let Some(warning) = throttle_warning {
result_text = format!("{result_text}\n\n{warning}");
}
if name == "ctx_read" {
let read_path = self
.resolve_path(&get_str(args, "path").unwrap_or_default())
.await;
let project_root = {
let session = self.session.read().await;
session.project_root.clone()
};
let mut cache = self.cache.write().await;
let enrich = crate::tools::autonomy::enrich_after_read(
&self.autonomy,
&mut cache,
&read_path,
project_root.as_deref(),
);
if let Some(hint) = enrich.related_hint {
result_text = format!("{result_text}\n{hint}");
}
crate::tools::autonomy::maybe_auto_dedup(&self.autonomy, &mut cache);
}
if name == "ctx_shell" {
let cmd = get_str(args, "command").unwrap_or_default();
let output_tokens = crate::core::tokens::count_tokens(&result_text);
let calls = self.tool_calls.read().await;
let last_original = calls.last().map(|c| c.original_tokens).unwrap_or(0);
drop(calls);
if let Some(hint) = crate::tools::autonomy::shell_efficiency_hint(
&self.autonomy,
&cmd,
last_original,
output_tokens,
) {
result_text = format!("{result_text}\n{hint}");
}
}
let skip_checkpoint = matches!(
name,
"ctx_compress"
| "ctx_metrics"
| "ctx_benchmark"
| "ctx_analyze"
| "ctx_cache"
| "ctx_discover"
| "ctx_dedup"
| "ctx_session"
| "ctx_knowledge"
| "ctx_agent"
| "ctx_share"
| "ctx_wrapped"
| "ctx_overview"
| "ctx_preload"
);
if !skip_checkpoint && self.increment_and_check() {
if let Some(checkpoint) = self.auto_checkpoint().await {
let combined = format!(
"{result_text}\n\n--- AUTO CHECKPOINT (every {} calls) ---\n{checkpoint}",
self.checkpoint_interval
);
return Ok(CallToolResult::success(vec![Content::text(combined)]));
}
}
let tool_duration_ms = tool_start.elapsed().as_millis() as u64;
if tool_duration_ms > 100 {
LeanCtxServer::append_tool_call_log(
name,
tool_duration_ms,
0,
0,
None,
&chrono::Local::now().format("%Y-%m-%d %H:%M:%S").to_string(),
);
}
let current_count = self.call_count.load(std::sync::atomic::Ordering::Relaxed);
if current_count > 0 && current_count.is_multiple_of(100) {
std::thread::spawn(crate::cloud_sync::cloud_background_tasks);
}
Ok(CallToolResult::success(vec![Content::text(result_text)]))
}
}
pub fn build_instructions_for_test(crp_mode: CrpMode) -> String {
crate::instructions::build_instructions(crp_mode)
}
fn get_str_array(args: &Option<serde_json::Map<String, Value>>, key: &str) -> Option<Vec<String>> {
let arr = args.as_ref()?.get(key)?.as_array()?;
let mut out = Vec::with_capacity(arr.len());
for v in arr {
let s = v.as_str()?.to_string();
out.push(s);
}
Some(out)
}
fn get_str(args: &Option<serde_json::Map<String, Value>>, key: &str) -> Option<String> {
args.as_ref()?.get(key)?.as_str().map(|s| s.to_string())
}
fn get_int(args: &Option<serde_json::Map<String, Value>>, key: &str) -> Option<i64> {
args.as_ref()?.get(key)?.as_i64()
}
fn get_bool(args: &Option<serde_json::Map<String, Value>>, key: &str) -> Option<bool> {
args.as_ref()?.get(key)?.as_bool()
}
fn extract_search_pattern_from_command(command: &str) -> Option<String> {
let parts: Vec<&str> = command.split_whitespace().collect();
if parts.len() < 2 {
return None;
}
let cmd = parts[0];
if cmd == "grep" || cmd == "rg" || cmd == "ag" || cmd == "ack" {
for (i, part) in parts.iter().enumerate().skip(1) {
if !part.starts_with('-') {
return Some(part.to_string());
}
if (*part == "-e" || *part == "--regexp" || *part == "-m") && i + 1 < parts.len() {
return Some(parts[i + 1].to_string());
}
}
}
if cmd == "find" || cmd == "fd" {
for (i, part) in parts.iter().enumerate() {
if (*part == "-name" || *part == "-iname") && i + 1 < parts.len() {
return Some(
parts[i + 1]
.trim_matches('\'')
.trim_matches('"')
.to_string(),
);
}
}
if cmd == "fd" && parts.len() >= 2 && !parts[1].starts_with('-') {
return Some(parts[1].to_string());
}
}
None
}
fn execute_command_in(command: &str, cwd: &str) -> (String, i32) {
let (shell, flag) = crate::shell::shell_and_flag();
let normalized_cmd = crate::tools::ctx_shell::normalize_command_for_shell(command);
let dir = std::path::Path::new(cwd);
let mut cmd = std::process::Command::new(&shell);
cmd.arg(&flag)
.arg(&normalized_cmd)
.env("LEAN_CTX_ACTIVE", "1");
if dir.is_dir() {
cmd.current_dir(dir);
}
let output = cmd.output();
match output {
Ok(out) => {
let code = out.status.code().unwrap_or(1);
let stdout = String::from_utf8_lossy(&out.stdout);
let stderr = String::from_utf8_lossy(&out.stderr);
let text = if stdout.is_empty() {
stderr.to_string()
} else if stderr.is_empty() {
stdout.to_string()
} else {
format!("{stdout}\n{stderr}")
};
(text, code)
}
Err(e) => (format!("ERROR: {e}"), 1),
}
}
pub fn tool_descriptions_for_test() -> Vec<(&'static str, &'static str)> {
crate::tool_defs::list_all_tool_defs()
.into_iter()
.map(|(name, desc, _)| (name, desc))
.collect()
}
pub fn tool_schemas_json_for_test() -> String {
crate::tool_defs::list_all_tool_defs()
.iter()
.map(|(name, _, schema)| format!("{}: {}", name, schema))
.collect::<Vec<_>>()
.join("\n")
}
#[cfg(test)]
mod tests {
#[test]
fn test_unified_tool_count() {
let tools = crate::tool_defs::unified_tool_defs();
assert_eq!(tools.len(), 5, "Expected 5 unified tools");
}
#[test]
fn test_granular_tool_count() {
let tools = crate::tool_defs::granular_tool_defs();
assert!(tools.len() >= 25, "Expected at least 25 granular tools");
}
#[test]
fn disabled_tools_filters_list() {
let all = crate::tool_defs::granular_tool_defs();
let total = all.len();
let disabled = vec!["ctx_graph".to_string(), "ctx_agent".to_string()];
let filtered: Vec<_> = all
.into_iter()
.filter(|t| !disabled.iter().any(|d| t.name.as_ref() == d.as_str()))
.collect();
assert_eq!(filtered.len(), total - 2);
assert!(!filtered.iter().any(|t| t.name.as_ref() == "ctx_graph"));
assert!(!filtered.iter().any(|t| t.name.as_ref() == "ctx_agent"));
}
#[test]
fn empty_disabled_tools_returns_all() {
let all = crate::tool_defs::granular_tool_defs();
let total = all.len();
let disabled: Vec<String> = vec![];
let filtered: Vec<_> = all
.into_iter()
.filter(|t| !disabled.iter().any(|d| t.name.as_ref() == d.as_str()))
.collect();
assert_eq!(filtered.len(), total);
}
#[test]
fn misspelled_disabled_tool_is_silently_ignored() {
let all = crate::tool_defs::granular_tool_defs();
let total = all.len();
let disabled = vec!["ctx_nonexistent_tool".to_string()];
let filtered: Vec<_> = all
.into_iter()
.filter(|t| !disabled.iter().any(|d| t.name.as_ref() == d.as_str()))
.collect();
assert_eq!(filtered.len(), total);
}
}