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agent-tool-builder

85 / 100 · Low risk

Fine to try.

By simbajigege/book2skills (GitHub) · marketing · 202 stars · scanned at commit e5ba66c

Define agent tools using the fail-closed design pattern — unified name/schema/security/execution in one class, with three-layer execution (validate → permission → call). Use this skill whenever the user wants to define a new agent tool, add permission or validation logic to an existing tool, or asks about 'build a tool', '定义一个工具', 'create a tool for X', '工具定义'. Framework-agnostic: works with hermes-agent, LangChain, or any Python agent framework.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'agent-tool-builder' ] || [ -L ~/.agents/skills/'agent-tool-builder' ]; then echo 'A skill folder named agent-tool-builder already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/simbajigege/book2skills' "$d" && git -C "$d" checkout --quiet 'e5ba66cac91c857dce254dc6b6195d52201068d8' -- 'skills/agent-tool-builder' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/agent-tool-builder' ~/.agents/skills/'agent-tool-builder' && 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/'agent-tool-builder' ~/.claude/skills/'agent-tool-builder' (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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