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feynman

100 / 100 · Low risk

Fine to try.

By connorads/dotfiles (GitHub) · design · 18 stars · scanned at commit 096aebe

Write and check Feynman specs, which are small executable models of how part of a system behaves (actors, messages, timers, invariants, scenarios) tied to the code by sources. The feynman CLI derives a playground, flows, model checking and diffs from them. Use to explain how a feature works, to review how a change affects behaviour, or to design a feature before or while building it.

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/'feynman' ] || [ -L ~/.agents/skills/'feynman' ]; then echo 'A skill folder named feynman already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/connorads/dotfiles' "$d" && git -C "$d" checkout --quiet '096aebe7f24cd9d06bcbf758550219e0c5614e4e' -- '.config/skills/vendor/.agents/skills/feynman' && mkdir -p ~/.agents/skills && cp -R "$d"/'.config/skills/vendor/.agents/skills/feynman' ~/.agents/skills/'feynman' && 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/'feynman' ~/.claude/skills/'feynman' (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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