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chore: bump version to 0.1479
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
arkon
@@ -0,0 +1,244 @@
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# Claude Code Agent Teams — Reference
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> Experimental feature (Feb 2026). Enable per-session via env var.
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> Updated with experiment findings from 2026-02-12.
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## Enabling
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```bash
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# Environment variable (set before starting Claude Code)
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CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1
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# In .claude/settings.local.json (case-scoped)
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{
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"env": {
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"CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS": "1"
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}
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}
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# Note: "teammateMode" is NOT a valid settings key (validation rejects it).
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# Display mode defaults to "in-process". For tmux, pass --teammate-mode flag via CLI.
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```
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## Filesystem Paths (Verified)
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| Resource | Path |
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|----------|------|
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| Team config | `~/.claude/teams/{team-name}/config.json` |
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| Teammate inboxes | `~/.claude/teams/{team-name}/inboxes/{name}.json` |
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| Shared tasks | `~/.claude/tasks/{team-name}/` |
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| Teammate transcripts | `~/.claude/projects/{hash}/{leadSessionId}/subagents/agent-{id}.jsonl` |
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Note: Teammate transcripts appear in the **standard subagent directory** under the lead's session, NOT as separate top-level sessions.
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### config.json format (verified)
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```json
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{
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"name": "research-watchers",
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"description": "Team description...",
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"createdAt": 1770875105373,
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"leadAgentId": "team-lead@research-watchers",
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"leadSessionId": "461daa80-94ec-4e5e-a1bb-0518f78311bc",
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"members": [
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{
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"agentId": "team-lead@research-watchers",
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"name": "team-lead",
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"agentType": "team-lead",
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"model": "claude-opus-4-6",
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"joinedAt": 1770875105373,
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"tmuxPaneId": "",
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"cwd": "/path/to/project",
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"subscriptions": []
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},
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{
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"agentId": "fs-researcher@research-watchers",
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"name": "fs-researcher",
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"agentType": "general-purpose",
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"model": "claude-opus-4-6",
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"prompt": "Full spawn prompt...",
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"color": "blue",
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"planModeRequired": false,
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"joinedAt": 1770875126680,
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"tmuxPaneId": "in-process",
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"cwd": "/path/to/project",
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"subscriptions": [],
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"backendType": "in-process"
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}
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]
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}
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```
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Key fields: `agentId` format is `{name}@{teamName}`, `leadSessionId` links to Claudeman session, `backendType` indicates display mode, `color` for UI theming.
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### Task file format (verified)
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```json
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{
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"id": "1",
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"subject": "Research Node.js fs.watch on Linux vs macOS",
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"description": "Full description...",
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"activeForm": "Researching Node.js fs.watch Linux vs macOS",
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"status": "in_progress",
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"blocks": [],
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"blockedBy": [],
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"owner": "fs-researcher"
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}
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```
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Internal teammate tracking tasks have `"metadata": { "_internal": true }`.
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Task states: `pending` → `in_progress` → `completed`. File locking via `.lock.lock` directory (mkdir-based atomic lock).
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### Inbox message format (verified)
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```json
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[
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{
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"from": "team-lead",
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"text": "{\"type\":\"task_assignment\",\"taskId\":\"1\",\"subject\":\"...\",\"assignedBy\":\"team-lead\",\"timestamp\":\"...\"}",
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"timestamp": "2026-02-12T05:45:18.176Z",
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"read": false
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}
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]
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```
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`text` is double-encoded JSON. Message types: `task_assignment`, `shutdown_request`, `shutdown_response`. File locking via `.json.lock` directory.
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## Communication Model (CORRECTED)
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**Hybrid: tool + filesystem.** The `SendMessage` tool writes to filesystem inbox files at `~/.claude/teams/{name}/inboxes/{teammate}.json`.
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Each teammate AND the lead has an inbox JSON file. Messages are JSON arrays with `from`, `text` (double-encoded JSON), `timestamp`, `read` fields.
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Message types observed:
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- **task_assignment**: Lead assigns task to teammate
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- **shutdown_request**: Lead asks teammate to shut down
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- **shutdown_response**: Teammate confirms shutdown
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- (Also: `message`, `broadcast`, `plan_approval_response` per docs)
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**Implication:** We can intercept messages by watching inbox files AND potentially inject messages by writing to them (respecting `.json.lock` directory locking).
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## Process Model (CORRECTED)
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**Teammates are IN-PROCESS THREADS, not separate OS processes.**
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In `in-process` mode (the default), all teammates run as threads within the single `claude` process. Only 1 claude process exists per Claudeman session, regardless of team size.
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This means:
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- No separate PIDs to track per teammate
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- All teammates share the lead's environment variables
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- Lower resource overhead than separate processes
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- Subagent transcript files still created (for progress tracking)
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## Display Modes
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| Mode | Trigger | UI | Requirement |
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|------|---------|-----|------------|
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| **in-process** (default) | Default | Shift+Up/Down to switch, Ctrl+T for tasks | Any terminal |
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| **tmux** | `--teammate-mode tmux` | Split panes | tmux installed |
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| **iTerm2** | Auto-detected | Native split panes | iTerm2 + `it2` CLI |
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**For Claudeman: use `in-process` only.** Claudeman uses GNU Screen, not tmux.
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**In-process UI elements:**
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- Status bar: `@main @teammate1 @teammate2 ...` with `shift+↑ to expand`
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- Task list: Checkboxes with assignments `(@teammate-name)`
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- Hint: `ctrl+t to show teammates`
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## Hooks
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Two new hook types for quality gates (verified in settings schema):
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### TeammateIdle
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Fires when a teammate is about to go idle.
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- Exit code 0: Allow idle (normal)
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- Exit code 2: Send feedback back, keep teammate working
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### TaskCompleted
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Fires when a task is being marked complete.
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- Exit code 0: Allow completion
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- Exit code 2: Prevent completion, send feedback
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These are configured in `.claude/settings.local.json` alongside existing Claudeman hooks.
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## Subagent-Watcher Compatibility (Verified)
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**Teammates appear as standard subagents.** They create transcript files at:
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```
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~/.claude/projects/{hash}/{leadSessionId}/subagents/agent-{id}.jsonl
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```
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Claudeman's existing `subagent-watcher.ts` discovers them automatically. They appear in `/api/subagents` with status "active".
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**Distinguishing teammates from regular subagents:**
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- Description field starts with `<teammate-message teammate_id= team`
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- Cross-reference with `~/.claude/teams/{name}/config.json` members
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**Sub-subagents:** Teammates can spawn their own Task tool subagents, creating a 3-level hierarchy.
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## Cleanup Behavior (Verified)
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When the lead runs cleanup:
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1. Shutdown requests sent to all teammate inboxes
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2. Teammates shut down gracefully
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3. ALL filesystem artifacts deleted:
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- Inbox files and directory
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- Config.json
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- Team directory
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- All task files
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- Task directory
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4. Cleanup is atomic — all files removed in the same second
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## Comparison with Subagents (Task tool)
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| Aspect | Subagents (Task tool) | Agent Teams |
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|--------|----------------------|-------------|
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| Spawn method | Claude's built-in Task tool | Explicit team creation |
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| Process model | In-process threads | In-process threads (same!) |
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| Discovery | `subagents/agent-{id}.jsonl` only | BOTH subagent dir + `~/.claude/teams/` |
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| Communication | None (fire-and-forget) | Filesystem inboxes + SendMessage tool |
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| Shared state | None | Shared task list + inboxes |
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| Task tracking | Per-agent, no coordination | Shared with dependencies & ownership |
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| Lifecycle | Auto-cleanup on completion | Lead cleanup (deletes all artifacts) |
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| Sub-nesting | Can spawn sub-subagents | Teammates can spawn subagents too |
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| Cost | Lower (single context) | Higher (N context windows) |
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| Duration | Short-lived (seconds-minutes) | Longer-lived (minutes-hours) |
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## Limitations
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- No session resumption with in-process teammates (`/resume` doesn't restore them)
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- One team per session, no nested teams
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- Lead is fixed (cannot promote teammate)
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- Permissions set at spawn (change individually after)
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- Split panes require tmux or iTerm2 (not Screen)
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- Task status can lag (teammates may fail to mark complete)
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- Shutdown can be slow (waits for current tool call)
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## Useful Commands
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```bash
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# Check if teams exist
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ls ~/.claude/teams/
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# Check team config
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cat ~/.claude/teams/{name}/config.json | jq .
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# Check teammate inboxes
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cat ~/.claude/teams/{name}/inboxes/{teammate}.json | jq .
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# Check team tasks
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ls ~/.claude/tasks/{name}/
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for f in ~/.claude/tasks/{name}/*.json; do cat "$f" | jq .; done
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# Count Claude processes (teammates are threads, not processes)
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ps aux | grep '[c]laude' | grep -v grep
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# Check subagent detection of teammates
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curl -s http://localhost:3000/api/subagents | jq '.data[] | select(.description | startswith("<teammate"))'
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# Team interaction (in-process mode)
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# Shift+Up/Down: Switch between teammates
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# Enter: View teammate session
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# Escape: Interrupt teammate's turn
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# Ctrl+T: Toggle task list
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```
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