LocalFree

debuff MCP server

debuffjp/debuff

Let coding agents play, test and tune 2D browser games made with debuff: attach to the game you have open or a headless copy, read live state, explained source-mapped errors and frame timings, tune typed params, rewind, replay and fuzz, and verify with deterministic scenarios.

6 GitHub stars1 forks
Source code Website

Install debuff in Claude Code

Claude Code
claude mcp add debuff -- npx -y @debuffjp/mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "debuff": {
      "command": "npx",
      "args": [
        "-y",
        "@debuffjp/mcp"
      ]
    }
  }
}

Frequently asked questions

What does the debuff MCP server do?

Let coding agents play, test and tune 2D browser games made with debuff: attach to the game you have open or a headless copy, read live state, explained source-mapped errors and frame timings, tune typed params, rewind, replay and fuzz, and verify with deterministic scenarios.

Is the debuff MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does debuff run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add debuff to Claude Code?

Run: claude mcp add debuff -- npx -y @debuffjp/mcp

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