Source record

Published by LangChain Blog (T1.5 source). The original is at https://www.langchain.com/blog/mcp-in-langchain-stateless-protocol-elicitation-and-more.

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The summary and note below are generated by the signal pipeline — they are Beyond Desk’s reading, not quotations from the source.

LangChain has revamped MCP support in langchain.mcp to align with the July 2026 spec rewrite, which introduced a stateless core. Elicitation is handled as a LangGraph interrupt, and tool lists are cached. MCP Tier 1 SDKs approach 500M monthly downloads, and ChatGPT MCP tool calls grew 98x in 2026.

Concrete technical details on LangChain's updated MCP integration, plus adoption figures, that anyone wiring agents to tools needs to know about.

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