Prompt · Developer Tools

Breaking Change Check

Reviews a diff for breaking changes to public APIs before release.

Have ready: Paste the diff of the public API surface

Fill in · 4 fields

PASTE THE DIFFe.g. PYTHON PACKAGE / NPM LIBRARY / REST APIVERSIONYES/NO

Your prompt

Check this diff for breaking changes to the public API.

Diff (public surface only, or the whole thing, say which):
[PASTE THE DIFF]
Language/ecosystem: [e.g. PYTHON PACKAGE / NPM LIBRARY / REST API]
Current version: [VERSION], following semver? [YES/NO]

Classify every change as: BREAKING / non-breaking / behavioral-but-compatible.

Breaking includes: removed/renamed exports, changed signatures, changed defaults, changed error types, changed serialization formats, tightened validation, removed enum values, changed auth requirements.

For each BREAKING change: quote the diff, explain who breaks (which callers), and the migration note I should put in the changelog.

Verdict: can this ship as a minor/patch, or does it need a major version? If semver says major but the blast radius is tiny, say so and quantify it.

Paste it into Muse or any assistant. Blank fields stay as [brackets].

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