MCP-csharp-create

Scaffold a new C# MCP server project with the .NET MCP server template or an ASP.NET Core web project.
Implement MCP tools with tool-type, tool, and description attributes.
Add optional MCP prompts and resources.
Configure either stdio or HTTP transport in Program.cs.

Transport type: stdio for local or CLI use, or HTTP for remote or web use.
Project name in PascalCase, such as WeatherMcpServer.
.NET SDK version; the source document states that .NET 10.0 or later is required.
External API or service that the MCP tools will wrap, when applicable.

This skill is for creating server-side .NET MCP projects, not MCP clients or non-.NET servers.
Debugging existing servers, writing tests, and publishing or deployment are assigned to other skills.
Reflection-based WithToolsFromAssembly discovery is described as incompatible with Native AOT; the source document directs Native AOT projects to use WithTools<MyTools> instead.
Run dotnet build and confirm that the MCP server project builds without errors.
Confirm every tool class has McpServerToolType and every tool method has McpServerTool and Description.
Confirm every exposed tool parameter has a Description attribute.
For stdio transport, confirm console logging is directed to stderr rather than stdout.
For HTTP transport, confirm Program.cs calls app.MapMcp() and that requests use the configured MCP route.

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