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Rate Limits

All API key requests are rate-limited per key. The default is 60 requests per minute.

Headers​

Every response includes rate limit headers:

X-RateLimit-Limit: 60
X-RateLimit-Remaining: 57

Exceeding the Limit​

When you exceed the limit, the API returns 429 Too Many Requests:

{
  "error": "Rate limit exceeded",
  "limit": 60,
  "remaining": 0,
  "retry_after": 42
}

The Retry-After header indicates seconds until the limit resets.

Custom Limits​

Rate limits are configured per API key. Contact your administrator to increase limits for high-volume integrations.

JWT Sessions​

Requests authenticated via JWT cookie (the Senda SPA) are not rate-limited by the API gateway.