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Agents2026-08-29 · source-backed
The 1.4.0a2 alpha ships langchain.mcp, an MCPAdapter turning any MCP server into tools you hand straight to create_agent. Connection handling is FastMCP's rather than a reimplementation, so a URL, a local stdio script, an in-process FastMCP server, a multi-server config, or a hand-built fastmcp.Client all work through one entry point. Tools from get_tools() retain the client and stay callable after the async with block exits, so the context scopes discovery and not tool lifetime. This supersedes the separate langchain-mcp-adapters package. (GitHub)
Each link below shares sources, entities, or timing with this story.
MCP deprecates Roots / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (MCP deprecates Roots); both cover Client, FastMCP, MCP; reported by the same outlet (github.com).
Windsurf uses MCP / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Windsurf uses MCP); both cover Client, GitHub, MCP; reported by the same outlet (github.com).
Claude Code uses MCP / Shared entities / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (Claude Code uses MCP); both cover LangChain, MCP, Tools; overlapping topics (context, tool).
Claude uses MCP / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Claude uses MCP); both cover GitHub, MCP; reported by the same outlet (github.com).
OWASP released MCP / Shared entities / Same source domain / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (OWASP released MCP); both cover GitHub, MCP; reported by the same outlet (github.com).
OWASP released MCP / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (OWASP released MCP); both cover GitHub, MCP; reported by the same outlet (github.com).
Goose supports MCP / Shared entities / Same source domain / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (Goose supports MCP); both cover GitHub, MCP; reported by the same outlet (github.com).
MCP deprecates Roots / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (MCP deprecates Roots); both cover Client, FastMCP, MCP; overlapping topics (client, server).