---
name: multi-agent-mux-status
description: "Read-only instant snapshot of all agent herdr sessions — name, YAML status, herdr alive, pane cmd/cwd, resume UUID on disk, and any drift. No mutation. Reuses reconcile.sh --dry-run for the diff logic. Use when you want to know 'what's running RIGHT NOW' without spinning up the monitor loop."
version: 4.1.3
author: godopu
license: MIT
platforms: [linux, macos]
environments: [terminal, herdr]
metadata:
  hermes:
    tags: [agent, herdr, claude, antigravity, agy, grok, status, read-only, snapshot]
    related_skills: [multi-agent-mux-create, multi-agent-mux-resume, multi-agent-mux-stop, multi-agent-mux-monitor]
    prereq_skills: [multi-agent-mux-create, multi-agent-mux-monitor]
---

# Multi-Agent Status — Read-Only Instant Snapshot

> **Companion skills**: `multi-agent-mux-create` (start), `multi-agent-mux-resume` (re-attach), `multi-agent-mux-stop` (terminate), `multi-agent-mux-monitor` (live polling).
> **Herdr Isolation**: `status` 명령은 YAML의 `herdr_session` 필드를 자동으로 파싱하여 상태를 확인하므로, `HERDR_SESSION_NAME` 환경변수를 수동으로 지정하지 않아도 모든 격리 서버의 세션 상태를 통합 조회합니다.
> **Single source of truth**: `./.mam/agent-sessions.yaml`.

## What this skill does

Print a single table of every agent herdr session, comparing YAML state to actual herdr state. **No mutation. No polling loop.**

This is the "what's running right now?" answer — faster than dispatching `multi-agent-mux-monitor` (which polls every 30s) and safer than `reconcile.sh --once --emit-diff` (which mutates as a side effect).

## Pre-flight

```bash
has_real_herdr || { echo "ERROR: herdr not installed"; exit 1; }   # lib.sh helper (B-3)
command -v python3
test -f .mam/agent-sessions.yaml
```

> `command -v herdr` and `type -P herdr` both report success even when herdr is
> not installed — they match lib.sh's `herdr()` function and the `.mam/shim`
> wrapper respectively. Always use `has_real_herdr`.

If `agent-sessions.yaml` doesn't exist or is malformed → print clear error, exit 1. **Do not create it.** (Use `multi-agent-mux-create` first.)

## Workflow

```bash
bash .agents/skills/multi-agent-mux-status/scripts/status.sh [--json]
```

The script:

1. Calls `reconcile.sh --once --emit-diff --dry-run` (read-only; no YAML mutation) for the drift snapshot
2. Loads `agent-sessions.yaml` (read-only) to enrich the table
3. For each row in `herdr_sessions[]`:
   - herdr alive? (via `herdr agent get <name>`, real native command — the script sources `lib.sh` internally, which is what lets it also spell this as `herdr has-session -t <name>`)
   - pane cmd, cwd (via `herdr agent get <name>`, likewise shimmed as `herdr list-panes` internally)
   - resume UUID on disk? (claude: `$CLAUDE_PROJECT_DIR/<key>/<uuid>.jsonl` with default `~/.claude/projects/`; agy: `$HOME_DIR/.gemini/antigravity-cli/conversations/<uuid>.db` with default `~/.gemini/...`)
4. For each herdr session matching `*-creator-*` not in YAML → flag as "unregistered"
5. Prints a table (default) or JSON (with `--json`)

## Output format (default = aligned table)

```
agent-sessions status — 2026-06-19T14:20:00Z  (herdr_confirmed=True)
========================================================================================================================================
NAME                                         SERVER       YAML       HERDR   CMD    RESUME   JOB_ID    JOB_STATUS   DRIFT
----------------------------------------------------------------------------------------------------------------------------------------
lab-landing-page-creator-claude              default      running    alive  claude yes      -         -            -
lab-landing-page-creator-agy                 default      terminated dead   agy    yes      5fe09ba8  completed    -
lab-paper-pdf2md-creator-claude              default      running    alive  claude scan     -         -            -
========================================================================================================================================
```

## Output format (`--json`)

```json
{
  "yaml_path": "...",
  "herdr_sessions_alive": ["..."],
  "yaml_entries": [...],
  "rows": [
    {
      "name": "lab-landing-page-creator-claude",
      "yaml_status": "running",
      "herdr_alive": true,
      "pane_cmd": "claude",
      "pane_cwd": "/home/.../refer_landing_page",
      "resume_uuid_on_disk": true,
      "drift": null
    },
    {
      "name": "lab-landing-page-creator-agy",
      "yaml_status": "terminated",
      "herdr_alive": false,
      "drift": "yaml-says-terminated-but-disk-uuid-still-present"
    }
  ],
  "unregistered": [],
  "drifts": []
}
```

## Drift classes (read-only — never mutates)

| Class | Detection | Meaning |
|---|---|---|
| `A` | YAML `running`, herdr dead | session died without going through `multi-agent-mux-stop`. *Could* auto-terminate but won't — that's `multi-agent-mux-monitor`'s job. |
| `B` | herdr alive, not in YAML | ad-hoc session someone started without `multi-agent-mux-create`. Suggest: "use multi-agent-mux-create to register, or multi-agent-mux-stop to clean up." |
| `C` | YAML has `claude_session_id_own: null` AND a new *.jsonl exists | new session id materialized; suggest: "run multi-agent-mux-resume or reconcile to register it." |

## Pitfalls

- **Do NOT use this skill to drive mutations** — the output is a snapshot, not a call to action. If you need to fix drifts, run `multi-agent-mux-monitor` or `multi-agent-mux-resume` / `multi-agent-mux-stop` manually.
- **Read-only is enforced by script** — `status.sh` opens the YAML with `open(path)` (no `'w'`), never calls `herdr kill-session`, never writes anywhere. The `reconcile.sh --dry-run` mode is the same path.
- **If `agent-sessions.yaml` is malformed** — print the YAML error verbatim and exit 1. Do NOT attempt recovery (that's `multi-agent-mux-stop --purge-conversation` or manual edit's job).
- **Sessions outside the `<workspace>-creator-*` naming convention** are still shown but tagged `ad-hoc` — they didn't go through `multi-agent-mux-create` and aren't tracked in YAML.

## When to use

- "Is the claude session still running?" → this skill, not the monitor
- "What UUID does this workspace have?" → this skill
- "Is there drift between YAML and reality?" → this skill, then dispatch monitor or fix manually
- Quick sanity check before dispatching a long-running job

## When NOT to use

- Continuous live tracking → `multi-agent-mux-monitor`
- Recovering from corruption → manual edit + `.bak` restore
- Polling more than once a minute → `multi-agent-mux-monitor` (it dedupes)
