XML sitemap audit — find and fix the sitemap problems that quietly waste crawl budget and slow indexing. Discovers the sitemap (robots.txt, /sitemap.xml, sitemap index), validates structure and size limits, and cross-checks the URLs it lists against reality: non-200 / redirected / noindex / canonicalized-away URLs that shouldn't be in a sitemap, plus indexable pages that are missing from it.
Install
npx skills add nowork-studio/notfair-plugin --skill sitemap-auditnpx skills add nowork-studio/notfair-plugin --skill sitemap-audit -a claude-code -gnpx skills add nowork-studio/notfair-plugin --skill sitemap-audit -a codex -ggemini skills install https://github.com/nowork-studio/notfair-plugin.git --path skills/sitemap-auditgh skill install nowork-studio/notfair-plugin sitemap-auditgit clone --depth 1 https://github.com/nowork-studio/notfair-plugin /tmp/nowork-studio__notfair-plugin
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/nowork-studio__notfair-plugin/skills/sitemap-audit ~/.claude/skills/sitemap-audit # Claude Code
cp -R /tmp/nowork-studio__notfair-plugin/skills/sitemap-audit ~/.agents/skills/sitemap-audit # Codex, Cursor, Gemini CLI, Copilot, OpenCode