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Debugging a Failed Webhook Locally by Capturing, Fixing, and Replaying Requests

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A developer explains how to debug a failing webhook without triggering new provider events each time. The walkthrough uses the Hooklistener CLI to tunnel public HTTPS requests to a localhost app on port 3000, or to forward them from an existing Hooklistener endpoint. Developers capture a test delivery, inspect its method, path, headers, and body, then replay it against the fixed handler to confirm the response and side effects. The guide warns that replays keep the original event ID and that signature checks and timestamps can cause failures, so duplicate handling should be tested deliberately. Saving the captured request as a replay case lets developers rerun it after future changes.

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