Limits
| Scope | Limit | Notes |
|---|---|---|
Sandbox | 60 requests / minute | Per API key. |
Production (default) | 600 requests / minute | Per API key. Higher tiers available on request. |
Payment creation | 120 requests / minute | Per API key, in addition to the global limit. |
Rate limit headers
| Header | Meaning |
|---|---|
RateLimit-Limit | The request ceiling for the current window. |
RateLimit-Remaining | Requests remaining in the current window. |
RateLimit-Reset | Seconds until the window resets. |
Retry-After | On a 429, how many seconds to wait before retrying. |
Handling 429s
Back off using the Retry-After header, ideally with exponential backoff and jitter. Because payment creation is idempotent, it is always safe to retry a payment with the same Idempotency-Key after a 429.