Get an accurate, source-grounded list of BREAKING CHANGES for an npm package between two versions. Reach for this BEFORE writing or reviewing any dependency upgrade / migration — it defeats the model's stale, hallucinated migration knowledge by reading the real GitHub release notes (and CHANGELOG as fallback) for every version in the range. Returns breaking notes grouped per version, newest first.

Return the complete release notes (not just breaking lines) for every version of an npm package between from (exclusive) and to (inclusive), newest first. Use when you need full context — new features, fixes, deprecations — not only breaking changes, or when breaking_changes_between reports the maintainer wrote breaking notes prose-style.

List published versions of an npm package with their release dates, newest first. Use this to discover valid from/to values before calling breaking_changes_between, or to see how far behind an installed version is.