🟢Understanding Responses and Handling Errors

API responses are delivered in JSON format. The client applications must parse this JSON to extract the required data. Equally important is handling the HTTP status code returned with each response to determine success or failure.

Common HTTP Status Codes:

Status Code	Description
200 OK	The request was successful, and the response body contains the requested data.
400 Bad Request	The request was malformed (e.g., invalid parameters, incorrect format). Check the request syntax and parameters.
401 Unauthorized	Authentication failed. The access token is missing, invalid, or expired. Obtain/refresh the token.
403 Forbidden	Authentication succeeded, but the user does not have permission to access the requested resource
404 Not Found	The requested resource (e.g., specific address, endpoint path) does not exist.
429 Too Many Requests	The client has exceeded the allocated rate limit.
500 Internal Server Error	An unexpected error occurred on Nansen's servers.
504 Gateway Timeout	API didn't get a timely response from backend server