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Fleet Prime Agent runs on your machine and gives you a small set of commands to inspect what it’s doing. No external dashboards, no distributed tracing.

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Everyday commands

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Logs

~/.prime/agent/logs/. One rotating file per component (daemon, kernel, web). Tail them when a run misbehaves; the log lines line up with the tool cards you saw in the UI.

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Web health

The web app exposes GET /api/health (web/app/src/routes/api/health.ts) which reports kernel readiness via useKernelHealth. Use it as a liveness probe if you run the web server under a supervisor.

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Telemetry

Opt-in only. When enabled, packages/coding-agent/src/core/telemetry.ts batches events into telemetry.json under the config dir. Nothing leaves the machine unless you explicitly wire an exporter.

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When to reach for /doctor

  • The CLI hangs on startup.
  • A session won’t attach.
  • IPython cells fail with a kernel error.
  • After an upgrade.
/doctor --fix is the safe first move — it inspects the daemon socket, the kernel venv, and the auth store, and rebuilds what’s rebuildable.
Last modified on August 17, 2026