Locate the introduction or fix boundary for a validated Next.js regression using releases or commits and an executable reproduction. Use after reported-version-versus-canary verification when a vercel/next.js maintainer needs the last unchanged and first changed version or commit.
Install
npx skills add vercel-labs/next-maintainer-skills --skill nextjs-bisect-regressionnpx skills add vercel-labs/next-maintainer-skills --skill nextjs-bisect-regression -a claude-code -gnpx skills add vercel-labs/next-maintainer-skills --skill nextjs-bisect-regression -a codex -ggemini skills install https://github.com/vercel-labs/next-maintainer-skills.git --path skills/nextjs-bisect-regressiongh skill install vercel-labs/next-maintainer-skills nextjs-bisect-regressiongit clone --depth 1 https://github.com/vercel-labs/next-maintainer-skills /tmp/vercel-labs__next-maintainer-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/vercel-labs__next-maintainer-skills/skills/nextjs-bisect-regression ~/.claude/skills/nextjs-bisect-regression # Claude Code
cp -R /tmp/vercel-labs__next-maintainer-skills/skills/nextjs-bisect-regression ~/.agents/skills/nextjs-bisect-regression # Codex, Cursor, Gemini CLI, Copilot, OpenCode