vrchat-udon-mcp

# VRChat Udon MCP

[![Version](https://img.shields.io/badge/version-2.1.0-blue.svg)](https://github.com/MauDevVR/vrchat-udon-mcp/releases)
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
[![Node.js](https://img.shields.io/badge/Node.js-22%2B-green.svg)](https://nodejs.org/)
[![MCP](https://img.shields.io/badge/MCP-Model%20Context%20Protocol-purple.svg)](https://modelcontextprotocol.io)

**MCP server for VRChat UdonSharp development** — exposes the [agent-skills-vrc-udon](https://github.com/niaka3dayo/agent-skills-vrc-udon) knowledge base to AI assistants via the [Model Context Protocol](https://modelcontextprotocol.io).

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## 🌐 Documentation

| Language | README | Description |
|----------|--------|-------------|
| 🇺🇸 **English** | [docs/README.en.md](docs/README.en.md) | Full guide — installation, MCP setup, tools |
| 🇪🇸 **Español** | [docs/README.es.md](docs/README.es.md) | Guía completa en español |
| 🇫🇷 **Français** | [docs/README.fr.md](docs/README.fr.md) | Guide complet en français |
| 🇯🇵 **日本語** | [docs/README.ja.md](docs/README.ja.md) | 日本語の完全ガイド |
| 🇰🇷 **한국어** | [docs/README.ko.md](docs/README.ko.md) | 한국어 전체 가이드 |

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## What is this?

`vrchat-udon-mcp` is a **stdio MCP server** that indexes, searches, and validates UdonSharp documentation from the `agent-skills-vrc-udon` repository at runtime. No hardcoded docs — the remote repo is the single source of truth.

| | |
|---|---|
| **18 MCP tools** | Search, explain, validate, templates, SDK matrix |
| **Dynamic resources** | Skills, rules, cheatsheets, templates |
| **Live indexing** | MiniSearch with weighted ranking + file watcher |
| **IDE support** | Cursor, Claude Desktop, ChatGPT Desktop |

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## Quick start

```bash
git clone https://github.com/MauDevVR/vrchat-udon-mcp.git
cd vrchat-udon-mcp
pnpm install
pnpm update-docs && pnpm build-index && pnpm build
pnpm start

{
  "mcpServers": {
    "vrchat-udon": {
      "command": "node",
      "args": ["${workspaceFolder}/dist/index.js"]
    }
  }
}