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langchain-tool-builder

82 / 100 · Low risk

Fine to try.

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

Build LangChain (Python) tools using Claude Code's fail-closed design pattern — unified name/schema/security/execution in one class, with automatic three-layer execution (validate → permission → call). Use this skill whenever the user wants to define a new LangChain tool, add permission or validation logic to an existing tool, set up the ClaudeStyleTool base class in a project, or asks about "build_tool", "Claude Code style tool", "工具定义", or "langchain tool with permissions". Also trigger when …

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/'langchain-tool-builder' ] || [ -L ~/.agents/skills/'langchain-tool-builder' ]; then echo 'A skill folder named langchain-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 "$d" checkout --quiet 'e5ba66cac91c857dce254dc6b6195d52201068d8' -- 'skills/langchain-tool-builder' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/langchain-tool-builder' ~/.agents/skills/'langchain-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/'langchain-tool-builder' ~/.claude/skills/'langchain-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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