Resilient Claude Code Skill

Persistent, detached coding jobs for OpenClaw.

Most Claude Code wrappers run exec('claude ...'). If your agent turn times out, the gateway restarts, or the API hangs — your coding task dies.

This skill treats coding tasks as persistent, detached jobs using the @anthropic-ai/claude-agent-sdk.

Why This Exists

Decoupled Lifecycle

Agent turns have timeouts (e.g., 900s). Coding tasks take 20+ minutes. This skill starts a Claude agent process, detaches it from the agent session, and returns a jobId. The agent checks back later.

Restart Survival

If you restart OpenClaw (maintenance, crash, update), child processes usually get killed. This skill spawns processes in a separate process group with PID tracking on disk. On reboot, it re-acquires running jobs instead of losing them.

Rate Limit Intelligence

Generic wrappers treat any pause as a hang. This skill distinguishes between "Claude is thinking" and "API 429/503", bubbling precise status to the orchestrator.

Architecture

[ OpenClaw Agent ] -> (SKILL.md instructions) -> [ exec: node scripts/run.mjs ]
                                                        |
                                                  (Spawn detached job)
                                                        |
                                                  [ Claude Agent SDK ]
                                                        |
                                                  (Write state to disk)
                                                        v
                                                  [ jobs/<jobId>/ ]
                                                    ├── meta.json    (status, timestamps, pid)
                                                    ├── output.log   (streaming output)
                                                    └── result.json  (final result when done)

1. Agent calls start — gets a jobId and pid.
2. Agent turn ends. The coding job keeps running.
3. Agent polls status on next turn.
4. Skill reads process status and log tail from disk.
5. Returns: running | completed | failed | killed.

Usage

Start a job

node scripts/run.mjs start \
  --prompt "Read TASK.md and implement. Run tests." \
  --cwd /path/to/project \
  --job-id task-137

Check status

node scripts/run.mjs status --job-id task-137

Get logs

node scripts/run.mjs logs --job-id task-137 --tail 50

Get result

node scripts/run.mjs result --job-id task-137

List all jobs

node scripts/run.mjs list

Kill a job

node scripts/run.mjs kill --job-id task-137

File Structure

openclaw-skill-claude-code/
├── SKILL.md              # OpenClaw skill instructions
├── README.md             # Documentation
├── package.json          # Dependencies
├── scripts/
│   ├── run.mjs           # CLI entry point
│   ├── job-manager.mjs   # Job lifecycle management
│   └── worker.mjs        # Detached worker process
└── jobs/                 # Runtime state (gitignored)
    └── <jobId>/
        ├── meta.json
        ├── output.log
        └── result.json

Configuration

| Variable | Required | Default | Description | |----------|----------|---------|-------------| | ANTHROPIC_API_KEY | Yes | — | Claude API key | | CLAUDE_SKILL_JOBS_DIR | No | <skill-dir>/jobs | Directory for job state | | CLAUDE_SKILL_MODEL | No | SDK default | Override the model |

How It Works

Job Manager (scripts/job-manager.mjs): Manages the job lifecycle — start, status, result, logs, list, kill. Spawns workers as detached processes and tracks them by PID on disk.

Worker (scripts/worker.mjs): Runs in a detached process. Streams the Claude Agent SDK query() iterator, writing output to output.log and final results to result.json. Handles SIGTERM gracefully and detects rate limits.

CLI (scripts/run.mjs): Thin command-line wrapper over the job manager. All output is structured JSON.