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Over the years, I've built quite a few OpenAPI specs that'd get neglected over time and where the endpoints would eventually drift away from the spec.
I wanted to build something super lightweight that I could drop in during development to double check that my endpoints still match the spec as expected.
SpecGate is a lightweight proxy that checks API responses against the given OpenAPI spec. It'll tell you if there's an undocumented endpoint or if the response doesn't match the spec. I managed to catch about 10 issues with one of my more recent specs as soon as I started using it.
It's possible to run this in production as well, but it currently only logs to stdout/stderr, so keep that in mind if you decide to run it in production.
Would love to hear your feedback on this tool.
