Rate Limits

To ensure quality of service to all API users, each client (identified by IP + api_key) is limited to 1 request per second.

Each client may burst up to 3 requests per second.

The API endpoint enforces the rate limit by delaying the handling of each request so that an average of 1 rps is maintained. If a client exceeds the rate limit by an unspecified percentage, the endpoint will begin dropping requests and return HTTP error 503 - Service Temporarily Unavailable.