DAP-MCP

What it does

DAP-MCP is a powerful bridge that exposes the Debug Adapter Protocol (DAP) to AI assistants. It transforms your LLM from a code writer into a real-time debugger, allowing it to launch sessions, set breakpoints, inspect runtime variables, and step through code execution using natural language.

Tools

• debug_launch: Start a new debug session using direct arguments or VS Code launch.json configurations.
• debug_attach: Connect to an already running process or browser instance.
• debug_snapshot: The primary inspection tool that retrieves the complete state (threads, stack, scopes, variables) in one call.
• debug_evaluate: Evaluate complex expressions or batch of expressions to verify state.
• debug_breakpoints: Manage and set breakpoints within a specific source file.
• debug_step: Control execution flow via 'over', 'into', or 'out' stepping.
• debug_continue: Resume execution until the next breakpoint is hit.
• debug_run_to_line: A compound tool that runs execution to a specific line and immediately returns a state snapshot.

Installation

Install via the official script:

curl -sSL https://raw.githubusercontent.com/ctagard/dap-mcp/main/scripts/install.sh | bash

Claude Desktop config:

{
  "mcpServers": {
    "dap-mcp": {
      "command": "dap-mcp",
      "args": ["--mode", "full"]
    }
  }
}

Supported hosts

Confirmed support for Claude Desktop, Cursor, and other stdio-based MCP clients.