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Threejs Performance

Threejs Performance is an agent skill (a SKILL.md file) from CloudAI-X/threejs-skills. Measuring and optimizing three.js speed: render statistics, memory counters, fewer draw calls via merging, instancing, batching and LOD, fill rate, shadows, CPU work per frame, shader stalls and GPU. It works with Claude Code and has 3,745 GitHub stars across a repository of 3 listed skills.

github.com/CloudAI-X/threejs-skills/skills/threejs-performance (opens in a new tab)

Data as of from the GitHub API; description from the skill's SKILL.md. Report an error

View on GitHub (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/CloudAI-X/threejs-skills.git
cp -r threejs-skills/skills/threejs-performance ~/.claude/skills/threejs-performance   # personal, or .claude/skills in a project

In the Claude apps, zip the threejs-performance 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/CloudAI-X/threejs-skills.git
cp -r threejs-skills/skills/threejs-performance .agents/skills/threejs-performance   # repo; ~/.agents/skills for all projects

Standalone 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/CloudAI-X/threejs-skills.git
cp -r threejs-skills/skills/threejs-performance .cursor/skills/threejs-performance   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (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

Measuring and optimizing three.js speed: render statistics, memory counters, fewer draw calls via merging, instancing, batching and LOD, fill rate, shadows, CPU work per frame, shader stalls and GPU compute for particles, WebGL or WebGPU with TSL. Use when a scene is slow, janks or exceeds memory. Targets three.js r186. Examples use WebGLRenderer; the WebGPU and TSL section uses WebGPURenderer.

When it triggers

  • Use when a scene is slow, janks or exceeds memory.

More skills in CloudAI-X/threejs-skills

3 skills are listed from this repository.

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FAQ

Threejs Performance FAQ

Still curious? Email info@appsgit.com.

How do I install the Threejs Performance skill?

Copy the threejs-performance folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the Threejs Performance skill free?

Yes. The repository is open source under the MIT license.

Is Threejs Performance maintained?

The repository's most recent commit was on Oct 19, 2026. appsgit only lists skills from repositories with a commit in the last six months.