LangChain Adds Stateless MCP and Elicitation Support
π‘See how LangChain combines MCP elicitation, interrupts, and tool caching for agent builders.
β‘ 30-Second TL;DR
What Changed
MCP support is now organized under the langchain.mcp package.
Why It Matters
LangChain developers can build MCP integrations with a more standardized and state-aware workflow. The interrupt-based elicitation model may make it easier to pause agents for user input while preserving LangGraph orchestration.
What To Do Next
Review the new langchain.mcp package and prototype an MCP workflow that uses LangGraph interrupts for elicitation.
Key Points
- β’MCP support is now organized under the langchain.mcp package.
- β’The implementation uses FastMCP and targets the 2026-07-28 MCP specification.
- β’Elicitation is exposed as a LangGraph interrupt, and tool lists are cached.
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Original source: LangChain Blog β
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