API Request Replay, Snippet, and Runtime Debugging Tools

This hub focuses on the moment when an API call looks wrong in practice and you need to reconstruct exactly what was sent, reproduce it in another client, inspect the response, verify the webhook signature, and isolate whether the problem lives in request shape, headers, runtime drift, or transport security. It keeps snippet generation, replay, diffing, mock setup, header review, TLS inspection, and request-level debugging in one place so you can move from a raw failing call to a more testable reproduction without bouncing across unrelated pages.