Delegate a coding task to Grok Build (headless) as a subagent. Runs in the given repository using the user's existing Grok OAuth login. Returns grok's response plus a git-verified list of files changed and commands run. For tasks likely to exceed ~1 minute, pass background: true and poll grok_task_result — long synchronous calls can hit the MCP client's request timeout. Jobs in the same cwd run serially (queued) to keep results accurate. To continue a previous task with context intact, pass its session_id.

Fetch the result of a grok_task job (background, or one whose request timed out). Waits up to max_wait_ms for completion, then returns either the final result or a still-running status. Safe to call repeatedly. Results persist across server restarts.

Check status of grok_task jobs without blocking. Pass job_id for one job, omit it to list all known jobs (including persisted ones from previous server sessions).

Cancel a queued or running grok_task job. Kills the grok process and returns the verified partial changes on disk. Finished jobs are not affected.

List available Grok model IDs (from grok's local model cache).