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builtin

100 / 100 · Low risk

Fine to try.

By GCWing/OpenBitFun (GitHub) · coding · 4,019 stars · scanned at commit 2b71f1a

Synthetic built-in skill that must never be migrated.

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/'builtin' ] || [ -L ~/.agents/skills/'builtin' ]; then echo 'A skill folder named builtin already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/GCWing/OpenBitFun' "$d" && git -C "$d" checkout --quiet '2b71f1a61b3bc56b43c8ce06c347be977b9a141c' -- 'src/crates/services/legacy-migration/tests/fixtures/v0.2.19/user-root/skills/.system/builtin' && mkdir -p ~/.agents/skills && cp -R "$d"/'src/crates/services/legacy-migration/tests/fixtures/v0.2.19/user-root/skills/.system/builtin' ~/.agents/skills/'builtin' && 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/'builtin' ~/.claude/skills/'builtin' (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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Score history

DateVersionScore
2026-11-142b71f1a100
2026-11-104e7e25d100
2026-11-08cf4a544100
2026-11-075eecd04100