You can view a history of your API requests at API > API Logs in Dashboard. API Logs are kept for a maximum of 2 weeks. These logs include request headers, the request itself, and the response.
The HTTP response header contains the API Log's request ID in the Request-Id header.
Request-Id: req_EYK7jcUMwagioHmR1J4peaC2
You can also retrieve your API Logs via the API Logs API