Rivet field notes
Solve the request in front of you.
Clear, reusable techniques for REST API testing and HTTP debugging. Every article stands on its own, with examples you can follow in cURL or the API client you already use.
How to Test a REST API Without a Frontend
Turn an endpoint contract into a direct request and prove backend behavior before the interface exists.
Read the guide →Why Does My API Return 401 Unauthorized?
Trace credentials, Bearer syntax, token expiry, scopes, issuer checks, and the boundary between 401 and 403.
Diagnose a 401 →How to Turn a cURL Command into a Repeatable API Test
Convert an opaque terminal snippet into an understandable, editable, and shareable request baseline.
Build the workflow →How to Debug HTTP 4xx and 5xx Errors Step by Step
Preserve evidence, classify the failure, reduce variables, and produce a bug report another person can replay.
Follow the checklist →