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Formbox’s API rate limiting is in conformance with the IETF standard: Formbox’s API is capped at 600 requests per minute per key on all plans. This could could change in the future as we continue to improve the API. This is implemented to ensure a fair usage policy so that excessive use by a single user does not adversely affect the performance and usage of the API by others. You’ll receive a 429 Too Many Requests response code if the rate limit is exceeded.
Last modified on January 7, 2026