Add .NET Types Explorer MCP Server

[V0v1kkk]

Summary

This PR adds the .NET Types Explorer MCP Server to the Docker MCP Registry.

About the Server

The .NET Types Explorer MCP Server is a comprehensive tool that provides AI agents with detailed type information from .NET projects, enabling accurate code generation and API exploration.

Server Details

• Name: dotnet-types-explorer
• Image: vrogozhin/dotnet-types-explorer-mcp:1.1.7 (Self-Provided Pre-Built Image)
• Category: development
• Language: C# / .NET 9.0
• License: Apache 2.0
• MCP SDK: Official C# SDK

Features

• Assembly exploration and metadata extraction
• Namespace discovery across NuGet packages
• Comprehensive type reflection (classes, interfaces, methods, properties, fields, events)
• NuGet package search and version information
• Support for multiple NuGet sources (including private feeds)
• Generic types and nullable reference types support
• Wildcard filtering and pagination for large result sets

Tools Provided

1. ReferencedAssembliesExplorer - Retrieves referenced assemblies from .NET projects
2. NamespacesExplorer - Explores namespaces across assemblies with filtering
3. NamespaceTypes - Retrieves detailed type information from namespaces
4. NuGetPackageSearch - Searches NuGet packages
5. NuGetPackageVersions - Gets version history and dependencies for packages

Configuration

The server requires mounting the .NET project directory as a volume at /workspace. No additional environment variables or secrets are required for basic functionality.

Docker Image

• Multi-architecture: linux/amd64, linux/arm64
• Base Image: mcr.microsoft.com/dotnet/aspnet:9.0
• Includes: .NET SDK 9.0 for MSBuild support
• Transport: stdio (MCP standard)
• Already Published: Yes, on Docker Hub

Testing

• ✅ Docker image builds successfully
• ✅ Container starts and initializes MCP server
• ✅ MCP protocol handshake works
• ✅ Server processes requests correctly
• ✅ All tools tested with real .NET projects
• ✅ Cross-platform compatibility verified

Documentation

• Repository: https://github.com/V0v1kkk/DotNetMetadataMcpServer
• Comprehensive README: Yes, with installation and usage instructions
• Docker Documentation: Yes, with examples
• Configuration Examples: Yes, for multiple MCP clients

Submission Type

This is a Self-Provided Pre-Built Image submission (Option B). The image is already built, tested, and published to Docker Hub at vrogozhin/dotnet-types-explorer-mcp:1.1.7.

Compliance Checklist

• Follows security best practices
• Containerized and MCP-compatible
• Working Docker deployment
• Comprehensive documentation
• Proper error handling and logging
• stdio transport support
• License compatible (Apache 2.0)
• Tested and working
• tools.json provided to avoid build failures

Additional Information

This server addresses a critical need in AI-assisted .NET development by providing structured access to .NET type systems, making it easier for AI agents to understand and work with .NET codebases, libraries, and NuGet packages.