dnre-mcp

Links

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• GitLab Repository

Overview

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dnre-mcp is a Model Context Protocol (MCP) server for .NET assembly reverse engineering and decompilation. It gives AI assistants like Claude the ability to load, analyze, and decompile .NET assemblies without needing a GUI tool like dnSpy or ILSpy open. Built in C# on .NET 10 and powered by ICSharpCode.Decompiler (the engine behind ILSpy), it communicates over stdio for easy integration with Claude Code and Claude Desktop. The project is MIT licensed.

Features

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Assembly Management

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• Load .NET assemblies (dll/exe) from disk
• List all currently loaded assemblies

Type Analysis

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• List all types in an assembly with optional namespace filtering
• Search for types by name (case-insensitive)
• Get complete type metadata — base class, interfaces, fields, properties, methods, events, nested types
• Decompile entire types to C# source code

Method Analysis

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• Search for methods across all types by name
• Get method signature details — parameters, return type, accessibility, virtual/abstract/override
• Decompile specific methods to C# source (handles overloads)

Namespace Browsing

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• List all namespaces in an assembly

Quick Start

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1. Download the latest release from the GitLab releases page (pre-built binaries available for Windows x64 and Linux x64, no .NET SDK required).

2. Or build from source (requires .NET 10 SDK):

dotnet build src/DnreMcp/DnreMcp.csproj

3. Example MCP client config (e.g. for Claude Code or Claude Desktop):

{
  "mcpServers": {
    "dnre": {
      "command": "/path/to/DnreMcp"
    }
  }
}