> For the complete documentation index, see [llms.txt](https://docs.customer-alliance.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.customer-alliance.com/rate-limiting.md).

# Rate limiting

Requests are rate-limited per key (fixed window). A `429` response includes a `Retry-After` header — honour it before retrying.