# Playground

URL: https://tailrace.dev/docs/playground

> Paste text, see Tier 0 spans, and toggle policy actions - entirely in your browser.



Paste text and watch Tier 0 detection plus policy resolution run in-process. Toggle actions to see how the same spans re-render under a different policy.

<Playground />

Scanning is 100% client-side after this page loads. Pasted content is never uploaded, and the page does not ship analytics of what you paste. Once loaded, the playground works offline.

## See it in practice [#see-it-in-practice]

* [Detection tiers](/docs/concepts/detection-tiers) - what Tier 0 covers and accuracy expectations
* [Policy resolution](/docs/concepts/policy-resolution) - precedence and secrets-cannot-be-allowed
* [Quickstart](/docs/get-started/quickstart) - the same engine in your app