Use when Claude Code needs to communicate with an OpenClaw agent running on the same machine or a remote host via WebSocket gateway. Triggers: (1) sending messages or tasks to an OpenClaw agent, (2) injecting context into an agent's session without triggering a run, (3) checking gateway status or listing sessions, (4) reading an agent's conversation history, (5) aborting a running agent, (6) managing cron jobs. Covers WebSocket authentication (protocol v3, token auth), session key targeting, and a bundled Node.js bridge script.