Auto MCP

[kaladinstorm84]

I wrote an easy to use bolt on for dotnet APIs that auto creates an MCP server alongside your current API.

1. Install

<PackageReference Include="ZeroMcp" Version="1.*" />

2. Register services

// Program.cs builder.Services.AddZeroMcp(options => { options.ServerName = "My Orders API"; options.ServerVersion = "1.0.0"; });

3. Map the endpoint

app.MapZeroMcp(); // registers POST /mcp

4. Tag your actions

//Controller class
 [ApiController]
 [Route("api/[controller]")]
 public class OrdersController : ControllerBase
 {
    [HttpGet("{id}")]
    [Mcp("get_order", Description = "Retrieves a single order by ID.")]
    public ActionResult<Order> GetOrder(int id) { ... }

    [HttpPost]
    [Mcp("create_order", Description = "Creates a new order. Returns the created order.")]
    public ActionResult<Order> CreateOrder([FromBody] CreateOrderRequest request) { ... }

    [HttpDelete("{id}")]
    // No [Mcp] — invisible to MCP clients
    public IActionResult Delete(int id) { ... }
}

That's it.

It's still very much a work in progress, but looking for insights

Give it a try

https://www.nuget.org/packages/ZeroMcp/