Model Context Protocol6 min read
MCP in LangChain: Stateless Protocol, Elicitation, and More!
MCP support now lives in langchain.mcp, built on FastMCP for the 2026-07-28 spec, with elicitation handled as a LangGraph interrupt and tool lists cached.
By LangChain AccountsLangChain Blog
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Originally published by LangChain Blog on Sep 4, 2026.
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