Kyshi uses conventional HTTP status codes and a consistent JSON response envelope.

Use the HTTP status code for transport-level handling and the status, message, and data fields for application-level handling.

HTTP Status Code Summary

Method	Description
200 - OK	Everything worked as expected.
201 - Created	Everything worked as expected and a new record has been created
400 - Bad Request	The request was unacceptable, often due to missing a required parameter.
401 - Unauthorized	No valid API key provided.
403 - Forbidden	The API key doesn't have permissions to perform the request.
404 - Not Found	The requested resource doesn't exist.
422 - Unprocessable Entity	This means we understands the content type of the request body, and the syntax of the request body is correct however we're unable to process the contained instructions.
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 Kyshi's end.

Error Response Shape

{
  "status": false,
  "message": "Unsupported Merchant Currency",
  "code": 422,
  "data": {}
}

Treat 400 errors as request-shape issues: missing fields, invalid enums, or wrong data types.
Treat 401 errors as key or environment issues.
Treat 404 errors as ID/reference/mode mismatches.
Treat 422 errors as business-rule failures, such as unsupported currency or insufficient balance.
Retry 5xx errors only when the operation is safe to retry or when you supplied your own unique reference.