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

# Rate limits

> Read current limits and handle rate-limited requests.

Read [Current limits](/api/reference/get_v1_reference_limits) for the live rate budgets, page sizes, and batch limits.

## Handle a 429 response

When the API returns `429`, read its `Retry-After` header. The value is a whole number of seconds to wait before trying again.

1. Pause requests for at least the returned delay.
2. Retry with backoff rather than sending a burst of immediate retries.
3. For a write, retain the original [idempotency key](/api/idempotency).

Keep concurrency bounded during imports and synchronisation. The operation pages document the request and response shapes; the limits endpoint supplies the current service limits.