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Rate limits

Each secret key has its own allowance of requests, so one busy integration does not slow another.

The limit#

By default a key can make 300 requests a minute. Requests beyond that are refused with 429 until the minute resets. If you need more, contact us with your use case.

Headers#

  • RateLimit-Remaining: how many requests you have left in the current window.
  • Retry-After: on a 429, how many seconds to wait before trying again.

Staying under it#

  • Do not poll for a payment's outcome. Use webhooks instead.
  • When you do get 429, wait for Retry-After and then retry with growing delays.
  • Use limit=200 when reading long lists, rather than many small pages.
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