LangGraph & LangChain

From zero to production agents

A doc-verified, code-first book on LangGraph 1.2 and LangChain 1.4: models, messages, graphs, checkpointers, middleware, multi-agent systems and a production architecture review.

Every chapter is verified against the official docs and the installed packages, and every example runs without API keys.

Chapters

Chapters are being edited for publication.