diff --git a/src/ClaudeDo.Worker/CLAUDE.md b/src/ClaudeDo.Worker/CLAUDE.md
index 86ee7ab..aa63830 100644
--- a/src/ClaudeDo.Worker/CLAUDE.md
+++ b/src/ClaudeDo.Worker/CLAUDE.md
@@ -24,7 +24,14 @@ Worker/
 - **IQueueWaker / IQueuePicker / QueueService** — waker is a singleton `SemaphoreSlim`; picker performs the atomic `Queued → Running` claim filtered by `BlockedByTaskId IS NULL` and schedule; QueueService is a thin `BackgroundService` that loops on the waker and dispatches via `TaskRunner`.
 - **OverrideSlotService** — owns `RunNow` / `ContinueTask`; goes through `TaskStateService.StartRunningAsync` (caller-driven, serialized by slot lock).
 - **StaleTaskRecovery** — startup-only service; calls `TaskStateService.RecoverStaleRunningAsync` to flip orphaned `Running` rows to `Failed`.
-- **External/ExternalMcpService** — always-on MCP tools for general Claude sessions: `ListTaskLists`, `ListTasks`, `GetTask`, `AddTask` (with tags), `UpdateTask`, `UpdateTaskStatus` (`Idle` / `Queued`), `SetTaskTags`, `ListTags`, `DeleteTask`, `RunTaskNow`, `CancelTask`. Auth via optional `X-ClaudeDo-Key` header.
+- **External/*** — always-on MCP tools for general Claude sessions, scoped to *starting* and *observing* sessions (no worktree/merge, multi-turn, planning, or app-settings writes). Auth via optional `X-ClaudeDo-Key` header. Registered explicitly in `Program.cs`'s external app via `.WithTools<T>()`. Organized by concern:
+  - `ExternalMcpService` — task CRUD + execution: `ListTaskLists`, `ListTasks`, `GetTask`, `AddTask`, `UpdateTask`, `UpdateTaskStatus` (`Idle` / `Queued`), `RunTaskNow`, `CancelTask`, `DeleteTask`
+  - `ListMcpTools` — `CreateList`, `UpdateList`, `DeleteList`
+  - `ConfigMcpTools` — `GetListConfig`, `SetListConfig`, `SetTaskConfig`
+  - `RunHistoryMcpTools` — `ListRuns`, `GetRun`, `GetTaskLog` (latest run's log, tail-capped at 256 KB)
+  - `AgentMcpTools` — `ListAgents`
+  - `LifecycleMcpTools` — `ResetFailedTask`
+  - `AppSettingsMcpTools` — `GetAppSettings` (read-only)
 
 ## Status Model