MCP Integration

Chain Nodes is a native Model Context Protocol (MCP) host. It can connect to any MCP-compliant server to give its agents "hands" to interact with the world.

How it Works

1. Registry: Servers are defined in mcp_registry.yaml.
2. Discovery: When an agent starts, Chain Nodes connects to the specified MCP servers and discovers available tools.
3. Execution: The LLM chooses a tool, and Chain Nodes executes the call securely.

Configuring a Server

Add your server to mcp_registry.yaml:

  - name: google-sheets
    description: "Manage Google Sheets."
    env_var: GOOGLE_SHEETS_URL # If using SSE

Supported Transports

• Stdio: Local processes (node, python, npx, etc.). Supported natively by default.
• SSE: Remote servers over HTTP.

The Marketplace

Use the Marketplace in the Chain Nodes dashboard to discover and install community servers with one click. You can also customize your own server settings directly from the UI registry screen.