Hey Product Hunt 👋 I built ChangeRadar because I kept getting burned by silent breaking changes — a dependency bumps a "minor" version, CI stays green, and prod breaks because an API was removed or a default changed, and nobody read the changelog. ChangeRadar tracks 176+ popular libraries (npm + PyPI) and generates a plain-English page per release showing what actually breaks + how to migrate. Detection runs an LLM over the release notes, not keyword matching — so it catches "useFormState was removed → use useActionState" even when it isn't tagged BREAKING. What's free: • A changelog/breaking-change page for every tracked library • A GitHub Action that flags breaking changes in your PRs (uses: kaicheng042008-sudo/changeradar-action@v1) • A public data API at /libs.json Pro ($9/mo, launch price) adds instant alerts for your own stack + unlimited libraries. Built solo and brand new — I'd genuinely love feedback on detection accuracy and which libraries to add next. AMA!

ChangeRadar

Breaking-change alerts for your dependencies

Breaking-change alerts for your dependencies