LangChain Tool Builder is an AI Engineering skill for Claude Code, published by simbajigege in book2skills.
LangChain Tool Builder helps create LangChain Python tools with Claude Code’s fail-closed pattern. Use it when defining a new tool, adding validation or permissions, or setting up a ClaudeStyleTool base class.
LangChain Tool Builder is cataloged under AI Engineering on DirSkills. LangChain Tool Builder comes from a repository tagged agent-skills, agentskills, anthropic, anthropic-claude and book2skills.
Documentation
Helps define LangChain (Python) tools using Claude Code's buildTool() pattern:
a unified class that co-locates identity, schema, security properties, and execution logic,
with fail-closed defaults so new tools are safe by default.
This is the opening of the README. Read the full README on GitHub.
LangChain Tool Builder is one of 25 skills that DirSkills catalogs from simbajigege/book2skills, the repository it ships in. Its siblings there include Agent Memory Implementation, Agent Tool Builder and Business Adventures Analysis. Each one is a separate skill with its own page in this directory, installs the same way LangChain Tool Builder does, and is maintained by simbajigege in that same repository. The rest of the collection is listed on the simbajigege/book2skills page.
LangChain Tool Builder ranks #3436 by stars among the 3670 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of LangChain Tool Builder against them. Open each page to compare what they document and how they install.
LangChain Tool Builder is one of 25 skills cataloged on DirSkills from simbajigege/book2skills.
LangChain Tool Builder is one of 3670 AI Engineering skills cataloged on DirSkills, ranked #3436 by stars among them.