LangChain Skills

LangChain Skills is the official skill collection from langchain-ai for building agents with LangChain, LangGraph, and Deep Agents. Skills are task-specific procedures (one directory per skill) covering the framework's core workflows, installable via npx skills add langchain-ai/langchain-skills for any agent supporting the Agent Skills specification (Claude Code, Cursor, Windsurf, and more), or directly as a Claude Code plugin. The repo is actively maintained — recent additions include skills like langgraph-decision-models for routing agents with decision models instead of LLMs. For LangSmith-specific trace and dataset workflows, LangChain points users to the companion langsmith-skills repo.

The honest picture: this is framework-specific by design — if you don't build on LangChain/LangGraph, most skills won't apply. The project notes it is still in early development, so APIs and skill content may change. Coverage is narrower than community mega-packs; pair it with general engineering skills for non-LangChain work.

Run npx skills add langchain-ai/langchain-skills --skill '*' --yes (add --global for all projects), or /plugin marketplace add langchain-ai/langchain-skills in Claude Code.