Connect LangChain to Nodes2Cloud

langchain-mcp-adapters, for LangChain and LangGraph agents.

LangChain talks to the Nodes2Cloud MCP server at https://api.nodes2cloud.com/mcp over Streamable HTTP. Once connected, your agent can read the node catalogue, write and check workflows, and request deploys that wait for your approval by default.

Use a Personal Access Token

LangChain connects with a Personal Access Token. Create one in the editor under Integrations → MCP server → Headless & CI Tokens, then Generate Token. Replace n2c_pat_YOUR_TOKEN below with it. The code reads it from the N2C_API_KEY environment variable.

Treat the token like a password and keep it out of source control.

Python

python

import os
from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
    "nodes2cloud": {
        "transport": "streamable_http",
        "url": "https://api.nodes2cloud.com/mcp",
        "headers": {"Authorization": f"Bearer {os.environ['N2C_API_KEY']}"},
    }
})
tools = await client.get_tools()

LangChain's MCP documentationInstructions checked 27 October 2026