Wiretap

API diagnostics tool that validates, proxies, and mocks traffic against an OpenAPI contract.

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Wiretap is an open-source tool for teams building against OpenAPI contracts. It can proxy and validate live HTTP traffic against a spec, or run as a full mock server that simulates an API before its backend is built, with a monitor UI for inspecting requests in real time. It's aimed at API developers and QA teams working from an OpenAPI-first workflow.

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Behind the summary, Matchbox keeps a richer profile of Wiretap - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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