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plugin-authoring

100 / 100 · Low risk

Fine to try.

By asgeirtj/system_prompts_leaks (GitHub) · coding · 71,116 stars · scanned at commit fc0108f

Make a mod: a change to Claude's own interface or behaviour, such as a panel or pane that stays beside the chat and updates, a band, status line, toast, slash command, or hook on tool calls. Use to make, change or debug a mod or its hooks module.

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/'plugin-authoring' ] || [ -L ~/.agents/skills/'plugin-authoring' ]; then echo 'A skill folder named plugin-authoring already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/asgeirtj/system_prompts_leaks' "$d" && git -C "$d" checkout --quiet 'fc0108f594b63bca905f2c4815aaef430d13bd68' -- 'Anthropic/claude-code/skills/plugin-authoring' && mkdir -p ~/.agents/skills && cp -R "$d"/'Anthropic/claude-code/skills/plugin-authoring' ~/.agents/skills/'plugin-authoring' && 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/'plugin-authoring' ~/.claude/skills/'plugin-authoring' (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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