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dfv-checker

100 / 100 · Low risk

Fine to try.

By polar-bear-org/claude-skills (GitHub) · design · 54 stars · scanned at commit 95f0180

Stress tests concepts for desirability, feasibility, and viability, part of the Design Thinking Pack by 90n. Use this whenever the user says "run dfv-checker", "stress test these concepts", "check desirability feasibility viability", "is this idea actually sound", or concepts are about to get investment and nobody has asked the three hard questions on paper. Use it even for "poke holes in this idea".

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/'dfv-checker' ] || [ -L ~/.agents/skills/'dfv-checker' ]; then echo 'A skill folder named dfv-checker already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/polar-bear-org/claude-skills' "$d" && git -C "$d" checkout --quiet '95f01806ca43f6ee788d0579743e35853b695930' -- 'packs/design-thinking-pack/skills/dfv-checker' && mkdir -p ~/.agents/skills && cp -R "$d"/'packs/design-thinking-pack/skills/dfv-checker' ~/.agents/skills/'dfv-checker' && 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/'dfv-checker' ~/.claude/skills/'dfv-checker' (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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