Errors

Cal.com uses conventional HTTP response codes to indicate the success or failure of an API request. In general: Codes in the 2xx range indicate success. Codes in the 4xx range indicate an error that failed given the information provided (e.g., a required parameter was omitted, or something else failed, etc.). Codes in the 5xx range indicate an error with Cal.com's servers (these are rare).

HTTP	Status Code	Summary
200	OK	Everything worked as expected.
400	Bad Request	The request was unacceptable, often due to missing a required parameter
401	Unauthorized	No valid API key provided.
402	Request Failed	The parameters were valid but the request failed.
403	Forbidden	The API key doesn't have permissions to perform the request.
404	Not Found	The requested resource doesn't exist.
429	Too Many Requests	Too many requests hit the API too quickly. We recommend an exponential backoff of your requests.
500, 502, 503, 504	Server Errors	Something went wrong on our servers end. (These are rare.)