relimpact

Fast API compatibility reports that flag breaking changes in Go projects

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relimpact is a command-line tool for Go projects that compares two Git refs, snapshots the exported public API, and reports what changed -- breaking changes first, compatible additions below -- to answer whether a given change breaks the public API. It can post its report as a pull request comment when run from GitHub Actions. It targets Go developers and library maintainers who need a fast API-compatibility check before a release.

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Behind the summary, Matchbox keeps a richer profile of relimpact - 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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