langchain
Installation
SKILL.md
LangChain Skill
Build production AI agents with LangChain v1 (create_agent on top of LangGraph), its middleware
system, built-in MCP support and the LangGraph runtime. Verified against langchain 1.4.6,
langchain-core 1.6, langgraph 1.2 and deepagents 0.7 (Python 3.10+; deepagents needs 3.11+).
Quick Reference
| Topic | File |
|---|---|
| Built-in and custom middleware | references/middleware.md |
| LangGraph graphs, persistence, durability, streaming | references/langgraph.md |
| Subagents, handoffs, skills, routers | references/multi-agent.md |
Deep Agents harness and Managed Deep Agents (mda) |
references/deep-agents.md |
| RAG, embeddings, vector stores, retrievers | references/retrieval.md |