Qwen DAP MCP server

qwen-dap-mcp

Give coding agents a real native debugger.

qwen-dap-mcp is a local Debug Adapter Protocol (DAP) → Model Context Protocol (MCP) bridge for native crash debugging, hang/deadlock triage, crash dumps, differential runtime analysis, remote targets, and bounded fix/verify workflows.

Built for Qwen Code, usable from any stdio MCP client, and designed to expose debugger evidence without turning MCP into a general-purpose shell.

Quick start · Capabilities · Debugger support · Safety · Docs · Contributing

Why this exists

Coding agents can read source and propose patches, but native failures often cannot be diagnosed reliably from source alone. The useful evidence lives at runtime: thread stacks, registers, locals, disassembly, exception state, modules, memory, wait states, symbols, and crash dumps.

qwen-dap-mcp makes that evidence available through MCP and adds agent-oriented workflows on top of raw debugger primitives:

• Evidence first — inspect the actual failing process instead of guessing from source.
• High-level workflows — crash, hang, differential, causal tracing, progress probing, runtime-report, dump, and verification tools are designed for agents rather than humans driving a debugger console.
• Bounded automation — autonomous fix/verify state is explicit, serializable, iteration-limited, and re-checks the original reproduction.
• Small default surface — 18 core agent tools stay visible by default; forensic workflows and raw DAP controls are separate opt-in tiers.
• Local by default — the MCP server communicates over stdio and debugger adapters run locally unless you explicitly configure a validated remote target.

Quick start

Qwen Code

Install directly from GitHub:

qwen extensions install SLP-DEV1/qwen-dap-mcp

Or install the published npm package:

qwen extensions install @slp-dev1/qwen-dap-mcp

Then verify the extension:

/mcp
/skills

You should see the qwen-dap-mcp server and the bundled native-runtime-debug skill.

Any stdio MCP client

npx -y @slp-dev1/qwen-dap-mcp

Typical configuration:

{
  "mcpServers": {
    "qwen-dap-mcp": {
      "command": "npx",
      "args": ["-y", "@slp-dev1/qwen-dap-mcp"]
    }
  }
}

CLI discovery is available without starting the stdio server:

qwen-dap-mcp --help
qwen-dap-mcp --version

30-second example

You: Debug why app.exe crashes with --repro

Shortened. The full README is on GitHub.