# butterchurn-mcp

> butterchurn-mcp — sandraschi-butterchurn-mcp. Use this tool when you need to create immersive audio-visual experiences with a MilkDrop-style visualizer, solving the problem of enhancing music playback with interactive graphics. It takes audio input and outputs a WebGL visualizer with over 2,000 presets and BPM sync capabilities. Use it in contexts where you want to elevate your music mixing or listening experience, such as with mixx-dj-mcp or Claude Desktop.

Canonical page: https://skillsregistry.net/skills/sandraschi-butterchurn-mcp  
JSON: https://api.skillsregistry.net/v1/skills/sandraschi-butterchurn-mcp

## Description

MilkDrop-style audio-reactive WebGL visualizer via butterchurn — ~2,000 presets, modern GLSL shaders, BPM sync for mixx-dj-mcp. FastMCP 3.4 + zero-install webapp for Claude Desktop / Cursor.

## Trust

- **Trust score (0–1):** 0.80
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** MIT
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/sandraschi/butterchurn-mcp)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "sandraschi-butterchurn-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/sandraschi-butterchurn-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/sandraschi-butterchurn-mcp/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt