# Reference

Facts about how the OneHazel platform behaves, for teams evaluating or operating an integration.

| Page | What it covers |
|---|---|
| [Error reference](/reference/errors) | Every error code, its HTTP status, whether to retry, and what to do |
| [Rate limits](/reference/rate-limits) | Limits by plan, rate-limited responses, and a working backoff |
| [Environments](/reference/environments) | What you can access, API keys, testing safely, the demo casino simulator |
| [Security and data handling](/reference/security) | Encryption at rest, tenant isolation, GDPR requests, webhook signatures |
| [Changelog and deprecation policy](/reference/changelog) | What changed, and how breaking changes are announced |

## Service status

Live status for the OneHazel website, app, docs and API is published at **[status.onehazel.com](https://status.onehazel.com)**, including current state and recent uptime per service.