Install Breaking Changes as a Claude Code skill and your agent plans the upgrade for you — no API key, no browser. It reads the current version straight from your package.json, fetches the changelogs, and writes the tech-debt spec grounded in your real call sites. Ships with a zero-dependency CLI too.

# Install as a Claude Code skill
git clone https://github.com/Hayawan/breakingchanges.git
cp -r breakingchanges/skill/breaking-changes ~/.claude/skills/

# then just ask your agent:
#   "what breaks if I upgrade react from 18 to 19?"