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plan-a-feature

100 / 100 · Low risk

Fine to try.

By testdouble/han (GitHub) · coding · 341 stars · scanned at commit abba73a

Builds a feature specification from scratch through a relentless, evidence-based interview that walks the design tree decision-by-decision, resolving dependencies as it goes. Use when the user wants to plan, design, scope, specify, or flesh out a new feature, capability, or system behavior before implementation. Produces a feature specification focused on system behaviors, not implementation detail. Does not plan a restructure of code that already exists — use plan-a-change. Does not refine or …

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/'plan-a-feature' ] || [ -L ~/.agents/skills/'plan-a-feature' ]; then echo 'A skill folder named plan-a-feature already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/testdouble/han' "$d" && git -C "$d" checkout --quiet 'abba73a773528905a8f3d15956029394746e5c7f' -- 'han-planning/skills/plan-a-feature' && mkdir -p ~/.agents/skills && cp -R "$d"/'han-planning/skills/plan-a-feature' ~/.agents/skills/'plan-a-feature' && 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/'plan-a-feature' ~/.claude/skills/'plan-a-feature' (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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