debugger-mcp-server

An MCP server that enables AI agents to debug code in VS Code. It exposes debugging tools (breakpoints, stepping, variable inspection) over the Model Context Protocol, bridging to a companion VS Code extension that controls the actual debugger.

Setup

1. Install Agentic Debugger on Cursor or VS Code
2. Add the MCP server to your client configuration:

Claude Code:

claude mcp add debugger --scope user -- npx debugger-mcp-server

Claude Desktop, Cursor, or other MCP clients:

{
  "mcpServers": {
    "debugger": {
      "command": "npx",
      "args": ["debugger-mcp-server"]
    }
  }
}

The package is available on npm.

Available Tools

| Category | Tool | Description | |---|---|---| | Breakpoints | setBreakpoints | Set breakpoints in a file | | Breakpoints | removeBreakpoints | Remove breakpoints | | Breakpoints | listBreakpoints | List all active breakpoints | | Debug Session | startDebugSession | Launch a debug session | | Debug Session | stopDebugSession | Stop the active debug session | | Debug Session | stepOver | Step over the current line | | Debug Session | stepInto | Step into a function call | | Debug Session | stepOut | Step out of the current function | | Debug Session | continueExecution | Continue execution to next breakpoint | | Debug Session | getVariables | Inspect variables in current scope | | Debug Session | getCallStack | View the call stack | | Debug Session | evaluateExpression | Evaluate an expression in the debug context |