shinshin86/live2d-add-motion-sample-web-ui is a browser tool sample that adds new motions to Live2D models through JSON editing, without Cubism Editor. According to the repository description, it is set up so that AI coding agents can work using the browser screen and the documentation. There is no latest release information, and the repository version is not presented in FACTS either.
The core of what this repository shows is the way to handle the task of adding motions through JSON editing. The README summary contains an example that adds seven motions, including joy, wink, and nod, to the official sample model Hiyori. It also provides a motion generation script, a standalone verifier for checking the results, and a headless browser verification procedure. An AGENTS.md document for AI coding agents guides the working method. The project language is JavaScript and the license is MIT.
The model data itself is not included in the repository. Therefore, you cannot take the example model files from the repository and use them as they are. The provided information explains the Hiyori example and the working procedure, but it does not present the range over which it can be applied to other models, nor any performance comparison results. Rather than a general-purpose motion editor, this repository is close to an example that shows the process of adding motions via JSON editing.