toyMCP To-Do List Server

Name: toyMCP To-Do List Server
Author: izaqyos

@izaqyos

About toyMCP To-Do List Server

This is a simple example server implementing a To-Do list CRUD API using the Model Context Protocol (MCP) concepts, specifically using JSON-RPC 2.0 over HTTP. It uses Node.js, Express, and PostgreSQL (via Docker) for persistence.

Basic information

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "toyMCP": {
      "command": "docker",
      "args": [
        "compose",
        "up",
        "-d",
        "db"
      ]
    }
  }
}

Tools

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Overview

What is toyMCP To-Do List Server?

toyMCP To-Do List Server is a simple example server that implements a To-Do list CRUD API using the Model Context Protocol (MCP) concepts, specifically JSON-RPC 2.0 over HTTP. It uses Node.js, Express, and PostgreSQL (via Docker) for persistence, and includes an AI-powered agent framework for natural language interaction.

How to use toyMCP To-Do List Server?

Set up prerequisites: Node.js, npm, Docker, and Docker Compose. Clone the repository, run npm install, start PostgreSQL with docker compose up -d db, then start the server with npm start. The JSON-RPC endpoint is at http://localhost:3000/rpc. Authenticate by logging in at /auth/login with username and password to obtain a JWT token, then include it as an Authorization: Bearer <token> header in subsequent requests. Use curl to call methods like todo.list, todo.add, todo.remove, or mcp.discover. For natural language management, use the agent framework in the agent-framework/ directory.

Key features of toyMCP To-Do List Server

JSON-RPC 2.0 API over HTTP
CRUD operations for todo items
JWT-based authentication
PostgreSQL persistence via Docker
Interactive Swagger UI documentation
AI-powered natural language agent framework
Unit, integration, and end-to-end tests

Use cases of toyMCP To-Do List Server

Manage a personal todo list via API calls
Integrate with AI agents using natural language
Serve as a learning example for MCP and JSON-RPC
Automated testing of CRUD operations

FAQ from toyMCP To-Do List Server

What is the default port and endpoint?

The server listens on port 3000 by default (configurable via the PORT environment variable), and the JSON-RPC endpoint is at /rpc.

How do I authenticate?

Send a POST request to /auth/login with your username and password. Copy the token from the response, then include it as an Authorization: Bearer <token> header in all subsequent requests to protected endpoints.

What are the available JSON-RPC methods?

The methods are todo.list, todo.add, todo.remove, and mcp.discover (which describes the service and its available methods).

What are the dependencies?

The server requires Node.js, npm, Docker, and Docker Compose for the PostgreSQL database. The agent framework can use local Ollama or OpenAI cloud models.

How can I reset the database?

Use the clean_start.sh script, which stops and removes the database container, restarts it, and then starts the server fresh.

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