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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.)
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