ToDoApp

A small .NET 9 MCP Server that manages todo tasks, stored in PostgreSQL, and exposes them through an MCP (Model Context Protocol) server so clients (e.g. Cursor, Claude Desktop) can create, query, update, complete, and soft-delete tasks via tools.

I also used Dapper and FluentMigrator for the first time for database management.

The project also uses Clean Architecture. This was my first time using it in .NET project.

Structure

Project	Role
ToDoApp.Entities	TaskEntity and domain types
ToDoApp.Common	Shared constants (e.g. validation)
ToDoApp.Infrastructure	Dapper + Npgsql data access, FluentMigrator migrations
ToDoApp.UseCases	Application use cases (one per operation), orchestrating the repository
ToDoApp.MCPServer	Hosted MCP server (stdio) that wires DI and registers tools

For interacting with the MCP Server i used Claude Desktop

Examples:

- Get all tasks

- Get all completed tasks

- Delete task