API requests limit

The requests made to Subscription API count towards the overall API calls limit set in the Fair Use Policy or your subscription plan. There is no limit on the total number of API calls you can make.

Rate limiting

Rate limits specify the number of requests you or your application can make to Subscription API within a specific time window. There are per second and per minute time frames with different rate limits.

• 10 requests per second
• 400 requests per minute

When you reach the limit of a specific time window, the API will reject the request and respond with the 429 HTTP error. The error response will include the Retry-After  header that tells you how many seconds you need to wait before attempting further requests. Each failed request is perfectly safe to retry. If you begin to receive 429 HTTP errors, reduce the frequency of your requests.