jkolo/debug-mcp

debug-mcp.net

MCP server for .NET debugging — enable AI agents to debug .NET applications interactively.

What is debug-mcp?

debug-mcp is a Model Context Protocol server that exposes .NET debugging capabilities as structured API tools. It allows AI assistants like Claude, GPT, or Copilot to:

• Launch or attach to .NET processes
• Set breakpoints, exception breakpoints, and tracepoints
• Step through code line by line
• Inspect variables, evaluate expressions, and read memory
• Analyze stack traces and threads
• Get full exception context with one call (exception autopsy)
• Navigate code with go-to-definition, find usages, and diagnostics
• Automatically resolve symbols from public symbol servers

Unlike similar tools that use external debuggers via DAP protocol, debug-mcp interfaces directly with the .NET runtime using ICorDebug APIs — the same approach used by JetBrains Rider.

Quick Start

Run

# No installation needed (.NET 10+)
dnx -y debug-mcp

Requirements

• .NET 10 SDK or later
• Linux (Windows and macOS support planned)

Configure with Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "dotnet-debugger": {
      "command": "dnx",
      "args": ["-y", "debug-mcp"]
    }
  }
}

Configure with Claude Code

Add to your .mcp.json:

{
  "mcpServers": {
    "dotnet-debugger": {
      "command": "dnx",
      "args": ["-y", "debug-mcp"]
    }
  }
}