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screenshot-diff

100 / 100 · Low risk

Fine to try.

By genkovich/agentic-engineering-course-public (GitHub) · design · 15 stars · scanned at commit 2dc9bdf

Compare a rendered component against a design baseline pixel by pixel. Triggers on '/screenshot-diff <story-id>' (e.g. '/screenshot-diff story-26'), or when the user asks to 'звір з Figma-еталоном', 'screenshot diff проти baseline', 'перевір верстку по скриншоту'. Reads baselines/<feature>.png, renders the component on :5173, snapshots to tmp/, computes the diff, returns pass/fail plus a diff image.

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/'screenshot-diff' ] || [ -L ~/.agents/skills/'screenshot-diff' ]; then echo 'A skill folder named screenshot-diff already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/genkovich/agentic-engineering-course-public' "$d" && git -C "$d" checkout --quiet '2dc9bdfa5d508a04d414fb0991617e6722ec635a' -- 'modules/7-execution-scale/7.6-feedback-loops/.claude/skills/screenshot-diff' && mkdir -p ~/.agents/skills && cp -R "$d"/'modules/7-execution-scale/7.6-feedback-loops/.claude/skills/screenshot-diff' ~/.agents/skills/'screenshot-diff' && 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/'screenshot-diff' ~/.claude/skills/'screenshot-diff' (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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