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VRChat Udon MCP

Version License: MIT Node.js MCP

MCP server for VRChat UdonSharp development — exposes the agent-skills-vrc-udon knowledge base to AI assistants via the Model Context Protocol.

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🌐 Documentation

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

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

MCP config (Cursor / Claude — relative paths only):

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

See docs/mcp-config.example.json and the language READMEs for npx, global install, submodule, and git dependency options.

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Table of contents

• Documentation
• What is this?
• Quick start
• Screenshots
• Contributing
• License

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Screenshots

Placeholder — add screenshots of MCP tools in Cursor, search results, or validation output here.

MCP connected in Cursor	search_documentation results
Screenshot pending	Screenshot pending

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License

MIT — Documentation and skills by niaka3dayo/agent-skills-vrc-udon. MCP server by MauDevVR.