Which integrations are available for this server?

Enables debugging of .NET applications, allowing users to launch or attach to processes, set and manage breakpoints, step through code, and inspect variables, scopes, and call stacks.

How do I use mcp-netcoredbg?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@mcp-netcoredbg set a breakpoint on line 15 of Program.cs and launch the debugger" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

mcp-netcoredbg

MCP server for .NET debugging via netcoredbg.

Enables AI agents (Claude, etc.) to set breakpoints, step through code, and inspect variables in .NET applications.

Architecture

┌─────────┐ MCP ┌─────────────────┐ DAP ┌─────────────┐ │ Claude │ ──────────► │ mcp-netcoredbg │ ──────────► │ netcoredbg │ │ │ (tools) │ (this repo) │ (stdio) │ (Samsung) │ └─────────┘ └─────────────────┘ └──────┬──────┘ │ ▼ ┌─────────────┐ │ .NET App │ └─────────────┘

Tools

Tool	Description
`launch`	Start debugging a .NET application (DLL path)
`attach`	Attach to a running .NET process
`set_breakpoint`	Set breakpoint at file:line (supports conditions)
`remove_breakpoint`	Remove a breakpoint
`list_breakpoints`	List all active breakpoints
`continue`	Continue execution
`pause`	Pause execution
`step_over`	Step over current line
`step_into`	Step into function call
`step_out`	Step out of current function
`stack_trace`	Get current call stack
`scopes`	Get variable scopes for a stack frame
`variables`	Get variables from a scope
`evaluate`	Evaluate expression in debug context
`threads`	List all threads
`output`	Get recent program output
`status`	Get debugger status
`terminate`	Stop debugging session

Prerequisites

netcoredbg installed and in PATH
Node.js 18+

Installation

# Install netcoredbg (example for Linux x64) curl -sLO https://github.com/Samsung/netcoredbg/releases/download/3.1.3-1062/netcoredbg-linux-amd64.tar.gz tar xzf netcoredbg-linux-amd64.tar.gz sudo mv netcoredbg /opt/netcoredbg sudo ln -sf /opt/netcoredbg/netcoredbg /usr/local/bin/netcoredbg # Build this MCP server npm install npm run build

Usage with Claude Code

Add to your Claude Code MCP settings:

{ "mcpServers": { "netcoredbg": { "command": "node", "args": ["/path/to/mcp-netcoredbg/dist/index.js"] } } }

Security

This tool launches and controls a debugger. By design, it can:

Execute arbitrary .NET applications
Evaluate expressions within the debugged process
Inspect memory and variables

Only use this with code you trust. Do not debug untrusted applications.

Example Session

Build your .NET app with debug symbols: dotnet build --configuration Debug
Launch debugger: launch with the DLL path
Set breakpoints: set_breakpoint at file:line
Continue/step through code
Inspect variables with scopes and variables
Evaluate expressions with evaluate
Terminate when done

License

MIT

This server cannot be installed

-

security - not tested

A

license - permissive license

-

quality - not tested

How are these scores calculated?

Resources

GitHub Repository

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mcp-netcoredbg

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