Animation

OpenRig Studio

OpenRig Studio is a free local app that turns a motion description into an R15 or R6 Roblox animation using Claude Code, the Codex CLI, or an API key.

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  • 17 stars on November 3, 2026
  • MIT
  • Works with Claude Code, Codex CLI, Anthropic or OpenAI APIs
OpenRig Studio editor showing a blocky R15 backflip, a Claude Code prompt, and a dope sheet of joint keyframes.
Image from the hildlabs/openrig-studio README. Poster frame from the README GIF.
OpenRig Studio compare tab with the same backflip prompt played for Claude Code Opus and Codex side by side.
Image from the hildlabs/openrig-studio README. Poster frame from the README GIF.

How do I install OpenRig Studio?

From the README

git clone https://github.com/hildlabs/openrig-studio.git
cd openrig-studio
npm install
npm start

Windows can use start.cmd. macOS and Linux can use ./start.sh. The README says npm install is only needed when you use API keys.

What does OpenRig Studio do?

It needs Node.js 20 or newer. npm install is only required for API keys. The app opens at http://localhost:4330 and talks to Studio through the MCP server that ships with Studio. Send to Studio writes the clip under ServerStorage, RBX_ANIMSAVES, and places a preview rig. Play on my avatar needs a matching R15 or R6 playtest body. The README says a clip is a first draft, that one clip with visual review is two model calls, and that the app is free while your model plan is not. Keys stay in data/settings.json on your machine. The server listens on 127.0.0.1. The licence is MIT.

Source: hildlabs/openrig-studio. License file: MIT. Language reported for the repository: JavaScript.

Which other animation are on this list?

  • Animate Roblox Characters — Animate Roblox Characters is an open-source Codex and Claude Code skill that builds stylized R6 and R15 animations on a real Roblox rig in Blender.

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