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core-web-vitals

100 / 100 · Low risk

Fine to try.

By a5c-ai/babysitter (GitHub) · coding · 1,913 stars · scanned at commit feb68ab

Measure, analyze, and optimize Core Web Vitals — LCP, FID/INP, CLS — for improved web performance and search ranking.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'core-web-vitals' ] || [ -L ~/.agents/skills/'core-web-vitals' ]; then echo 'A skill folder named core-web-vitals already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/a5c-ai/babysitter' "$d" && git -C "$d" checkout --quiet 'feb68abe397acc14f32b34984975c48fedba2b33' -- 'library/specializations/web-development/skills/core-web-vitals' && mkdir -p ~/.agents/skills && cp -R "$d"/'library/specializations/web-development/skills/core-web-vitals' ~/.agents/skills/'core-web-vitals' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'core-web-vitals' ~/.claude/skills/'core-web-vitals' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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