> ## Documentation Index
> Fetch the complete documentation index at: https://docs.spoolpdf.nandra.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Trial render

> Smoke-test POST /v1/trial/render without an API key.

Same JSON body as `POST /v1/render`, no key. Does not increment usage. Not for production volume.

```bash theme={null}
curl -sS -D - -o trial.pdf \
  -X POST https://spoolpdf-api.nandra.dev/v1/trial/render \
  -H "Content-Type: application/json" \
  -d '{"html":"<h1>Trial</h1>"}'
```

Success: `200`, `application/pdf`, `X-Request-Id` only. No `X-Usage-Count`. `sandbox: true` still watermarks and sets `X-Sandbox: true`.

Over the per-IP cap returns `429` `rate_limited` with `Retry-After: 60`. Aggregate trial load is also bounded so it cannot starve authenticated renders.