The Checkbook API uses the following error codes:

Code

Message

Details

400

Bad Request

Your request is invalid

401

Unauthorized

Your API key is wrong

403

Forbidden

You do not have permission to access the requested endpoint

404

Not Found

The specified endpoint could not be found

405

Method Not Allowed

You tried to access an endpoint with an invalid method

429

Too Many Requests

You’re sending too many requests! Slow down!

500

Internal Server Error

We had a problem with our server. Try again later.

503

Service Unavailable

We’re temporarily offline for maintenance. Please try again later.