Daytona demo — Self-Hosted Sandboxes

Reference implementation of the usage guide on Daytona. daytona_webhook.py is a FastAPI app that handles the session.status_run_started webhook (verified with client.beta.webhooks.unwrap()), drains the environment work queue with client.beta.environments.work.poller(drain=True, auto_stop=False) so any single delivery recovers earlier missed ones, and per item creates a Daytona sandbox, uploads the same provider-agnostic sandbox_runner.py the Modal demo uses, and starts it. Daytona sandboxes are full Linux containers, so beta_agent_toolset_20260401 (bash/read/write/edit/glob/grep) works as-is.

No org API key reaches the runner: the webhook polls with the environment key, and each sandbox authenticates with that same environment key — the single credential for both the control plane and the per-session calls.

# standardwebhooks backs `client.beta.webhooks.unwrap()` — only the orchestrator
# host needs it; the inner Daytona sandbox never sees raw webhook deliveries.
pip install fastapi uvicorn daytona-sdk standardwebhooks anthropic

export DAYTONA_API_KEY=... DAYTONA_API_URL=...
export ANTHROPIC_WEBHOOK_SECRET=... \
       ANTHROPIC_ENVIRONMENT_ID=env_... ANTHROPIC_ENVIRONMENT_KEY=sk-ant-oat...

uvicorn daytona_webhook:app --host 0.0.0.0 --port 8080

Deploy the FastAPI app anywhere that can serve HTTP and reach the Daytona API (Fly, Render, a VM behind a tunnel, etc.), then register its URL as the webhook endpoint.

Cold-start note: _spawn() runs pip install anthropic inside each fresh Daytona sandbox, which adds ~10–15s before the runner starts. For production, pre-bake the SDK into a custom Daytona image and drop the pip install line.