How to Debug Inbound Webhooks Locally Without Using a Tunnel

Developers testing inbound webhooks from providers like Stripe or GitHub typically rely on tunnels to expose their local machine to the public internet, but a tunnel is only needed for reachability — not for capturing and replaying payloads. A lightweight local HTTP server built with Python's standard library can capture incoming webhook requests, including method, path, headers, and body, without any external dependency. Once a payload is captured, it can be replayed against a local handler as many times as needed, eliminating the slow loop of re-triggering real events through a third-party interface. Developers should be aware of a few pitfalls, including signature verification failures on replay, reading the request body only once from the stream, and binding the server to 127.0.0.1 rather than 0.0.0.0 to avoid exposing sensitive request data. The author has also packaged this approach into a paid tool called HookTrap, available as a one-time purchase for $49 with source code included.