Teamday
xAI

Harness · xAI · Grok Build

Grok Build.

xAI's terminal coding CLI, connected to TeamDay as a server-side harness. TeamDay invokes Grok Build in headless JSON mode, captures streaming events, and resumes durable CLI sessions when follow-up work returns to the same agent.

Run Grok agents in TeamDay →Read xAI docs →All harnesses

How TeamDay runs it

TeamDay calls grok with a prompt, working directory, streaming JSON output, model selection when requested, and a resume ID when the mission is continuing an existing session. Runner credentials come from the connected xAI account or API-key setup.

Best fit

  • Grok-backed coding work: use xAI models directly in the same mission system as Claude Code, Codex, Gemini CLI, Hermes, and Pi.
  • Independent review: assign a Grok-backed agent to verify or challenge work from another harness.
  • Server-side automation: TeamDay keeps the CLI in the runner, captures events, and stores the resulting job history.

Status in TeamDay

Supported. Grok Build can be selected as a TeamDay harness after the runner has xAI credentials. Grok 4.5 is the current default and can also be selected explicitly; Grok Build 0.1 remains available for compatibility. The integration uses deterministic CLI event parsing and durable resume IDs; TeamDay-managed MCP injection is not enabled for Grok Build yet.

Learn more

Run Grok agents in TeamDay.

Pick Grok Build in the model picker and connect an xAI account or API key — usage is billed by your own provider at direct rates. Starter is $99/mo with a 14-day money-back guarantee.

Get started