Melonjs 20 Migration
Melonjs 20 Migration is an agent skill (a SKILL.md file) from melonjs/melonJS. Agents load it when writing melonJS code that may be based on pre-20.x knowledge, when migrating a game from melonJS 19.x or earlier, or when an API you expected… It works with Claude Code and has 6,419 GitHub stars across a repository of 4 listed skills.
github.com/melonjs/melonJS/packages/melonjs/skills/melonjs-20-migration (opens in a new tab)
Data as of from the GitHub API; description from the skill's SKILL.md. Report an error
Add this skill
Claude
This repository is a Claude Code plugin marketplace. In Claude Code:
/plugin marketplace add melonjs/melonJS
/plugin install melonjs@melonjsIn the Claude apps, zip the melonjs-20-migration folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).
ChatGPT / Codex
Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:
git clone --depth 1 https://github.com/melonjs/melonJS.git
cp -r melonJS/packages/melonjs/skills/melonjs-20-migration .agents/skills/melonjs-20-migration # repo; ~/.agents/skills for all projectsStandalone skills also load in the ChatGPT desktop app.
Cursor
Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:
git clone --depth 1 https://github.com/melonjs/melonJS.git
cp -r melonJS/packages/melonjs/skills/melonjs-20-migration .cursor/skills/melonjs-20-migration # project; ~/.cursor/skills for all projectsSource (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)
What this skill does
Use this skill when writing melonJS code that may be based on pre-20.x knowledge, when migrating a game from melonJS 19.x or earlier, or when an API you expected does not exist. Covers the mandatory async Application.init(), the WebGL 2 baseline and WebGPU backend, renderable post effects replacing the shader property, and the deprecated exports still present. Triggers on: migration, upgrade, melonJS 19, me.game, me.video.init, renderable.shader, Compositor, CanvasTexture, me.Math, deprecated.
When it triggers
- Use this skill when writing melonJS code that may be based on pre-20.
- Triggers on: migration, upgrade, melonJS 19, me.
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How do I install the Melonjs 20 Migration skill?
In Claude Code, run /plugin marketplace add melonjs/melonJS and then /plugin install melonjs@melonjs. For Codex or Cursor, copy the melonjs-20-migration folder into .agents/skills/ or .cursor/skills/.
Is the Melonjs 20 Migration skill free?
Yes. The repository is open source under the MIT license.
Is Melonjs 20 Migration maintained?
The repository's most recent commit was on Oct 26, 2026. Its latest release is 20.10.1. appsgit only lists skills from repositories with a commit in the last six months.