Session Hygiene

OpenClaw's session store (sessions.json) grows unbounded — every hook, cron, and subagent invocation creates a session entry that never gets cleaned up. Heavy setups (webhooks + crons) can hit 200MB+ and 7000+ sessions within weeks, causing gateway slowdowns and unresponsiveness.

This skill sets up automated archive-and-rotate to keep sessions.json lean while preserving session history.

Quick Setup

Create a cron that runs every 6 hours: