custom-mcp-server-demo

A "Hello World" tour of the Model Context Protocol: build a simple Calculator MCP server with tools, resources, and prompts using FastMCP, connect to it over in-memory, STDIO, and HTTP transports, and hook it into a LangChain/LangGraph ReAct agent — including a multi-server setup.

{
  "mcpServers": {
    "custom-mcp-server-de": {
      "command": "uvx",
      "args": [
        "custom-mcp-server-demo"
      ]
    }
  }
}

claude mcp add custom-mcp-server-de uvx custom-mcp-server-demo

{
  "mcpServers": {
    "custom-mcp-server-de": {
      "command": "uvx",
      "args": [
        "custom-mcp-server-demo"
      ]
    }
  }
}