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mcp/harbor
LangChain

MCP Sidecar for LangChain

io.github.lsequeiraa/mcp-sidecar

Cross-platform MCP server for managing long-lived background processes from any MCP client

client:LangChain transport:stdio runtime:npm

Install MCP Sidecar in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "mcp-sidecar": {
            "transport": "stdio",
            "command": "npx",
            "args": ["-y", "mcp-sidecar"],
        }
})

tools = await client.get_tools()

get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs

MCP Sidecar in other clients

MCP Sidecar MCP server