Image to Three.js Model
img2threejs/img2threejs
Rebuilds the object in a reference image as a procedural, animation-ready Three.js model written entirely in code, using staged sculpting with quality checks.
three.js model, downloadable as OBJ or GLB. An agent skill from asgeirtj/system_prompts_leaks.
Install 3D Object
$ npx skills add asgeirtj/system_prompts_leaks --skill 3d-object -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install asgeirtj/system_prompts_leaks 3d-object --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/asgeirtj/system_prompts_leaks.git skills-src && mkdir -p .claude/skills && cp -r skills-src/Anthropic/claude-design/skills/3d-object .claude/skills/3d-object && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "3d-object" agent skill from https://github.com/asgeirtj/system_prompts_leaks/tree/main/Anthropic/claude-design/skills/3d-object into .claude/skills/3d-object/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "3d-object", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/asgeirtj/system_prompts_leaks/tree/main/Anthropic/claude-design/skills/3d-objectType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add asgeirtj/system_prompts_leaks --skill 3d-object -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install asgeirtj/system_prompts_leaks 3d-object --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/asgeirtj/system_prompts_leaks.git skills-src && mkdir -p .agents/skills && cp -r skills-src/Anthropic/claude-design/skills/3d-object .agents/skills/3d-object && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "3d-object" agent skill from https://github.com/asgeirtj/system_prompts_leaks/tree/main/Anthropic/claude-design/skills/3d-object into .agents/skills/3d-object/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "3d-object", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add asgeirtj/system_prompts_leaks --skill 3d-object -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install asgeirtj/system_prompts_leaks 3d-object --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/asgeirtj/system_prompts_leaks.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/Anthropic/claude-design/skills/3d-object .cursor/skills/3d-object && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "3d-object" agent skill from https://github.com/asgeirtj/system_prompts_leaks/tree/main/Anthropic/claude-design/skills/3d-object into .cursor/skills/3d-object/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "3d-object", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/asgeirtj/system_prompts_leaks.git --path Anthropic/claude-design/skills/3d-object--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add asgeirtj/system_prompts_leaks --skill 3d-object -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install asgeirtj/system_prompts_leaks 3d-object --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/asgeirtj/system_prompts_leaks.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/Anthropic/claude-design/skills/3d-object .gemini/skills/3d-object && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "3d-object" agent skill from https://github.com/asgeirtj/system_prompts_leaks/tree/main/Anthropic/claude-design/skills/3d-object into .gemini/skills/3d-object/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "3d-object", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install asgeirtj/system_prompts_leaks 3d-objectInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add asgeirtj/system_prompts_leaks --skill 3d-object -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/asgeirtj/system_prompts_leaks.git skills-src && mkdir -p .github/skills && cp -r skills-src/Anthropic/claude-design/skills/3d-object .github/skills/3d-object && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "3d-object" agent skill from https://github.com/asgeirtj/system_prompts_leaks/tree/main/Anthropic/claude-design/skills/3d-object into .github/skills/3d-object/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "3d-object", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add asgeirtj/system_prompts_leaks --skill 3d-object -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install asgeirtj/system_prompts_leaks 3d-object --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/asgeirtj/system_prompts_leaks.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/Anthropic/claude-design/skills/3d-object .opencode/skills/3d-object && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "3d-object" agent skill from https://github.com/asgeirtj/system_prompts_leaks/tree/main/Anthropic/claude-design/skills/3d-object into .opencode/skills/3d-object/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "3d-object", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
3d-object- GitHub stars
- 69k
- Token cost
- ~1.1k tokens
- SKILL.md length
- 462 words
- Files
- 1
- Skills in repo
- 124
- Repo updated
- First seen
- Licence
- CC0-1.0
At a glance
three.js model, downloadable as OBJ or GLB. An agent skill from asgeirtj/system_prompts_leaks.
- Tasks that involve 3D graphics and WebGL
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
3D Object is an agent skill from asgeirtj/system_prompts_leaks. three.js model, downloadable as OBJ or GLB
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Game Development, covering 3D graphics and WebGL. It works with Three.js. The repository describes itself as: Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Google - Gemini 3.8 Flash, 3.1 Pro… The licence is CC0-1.0.
When your agent uses it
- Tasks that involve 3D graphics and WebGL
Example prompts
- “/3d-object”
What it can do on your machine
Read from SKILL.md and the folder at commit e31ec21. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
unpkg.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
3D Object loads about 1.1k tokens when it runs. Until then it costs about 13 tokens; SKILL.md has 462 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from asgeirtj/system_prompts_leaks at commit e31ec21, republished under its CC0-1.0 licence (© asgeirtj). 462 words, ~1,071 tokens.
Download SKILL.mdSave it as
.claude/skills/3d-object/SKILL.md (or your agent's skills folder).- name
- 3d-object
- description
- three.js model, downloadable as OBJ or GLB
- user-invocable
- true
3D object
Model a 3D object the user can inspect from every angle and download, built with three.js and presented in the three_d_stage starter.
START by calling copy_starter_component with kind: "three_d_stage.js" — it is the whole viewer: studio lighting, ground shadow, orbit controls, an auto-framed camera, and a toolbar that downloads the object as OBJ + MTL or GLB. Read the copied file's usage block and follow its page skeleton exactly. You only write the model-building module script.
Build the page as plain HTML — a .html file with ordinary <script>
tags — even when the project's other designs are .dc.html Design
Components: DC restricts scripts to <helmet>, which races the stage's
mount and can't host this skeleton.
Load three.js ONLY through this exact pinned import map, in <head>,
before any module script. Do not change versions, URLs, or hashes, do
not add other copies of three.js, and do not import addons beyond the
three listed — the map is deliberately a closed set, so anything else
fails to resolve rather than loading unverified:
<script type="importmap">
{
"imports": {
"three": "https://unpkg.com/three@0.184.0/build/three.module.js",
"three/addons/controls/OrbitControls.js": "https://unpkg.com/three@0.184.0/examples/jsm/controls/OrbitControls.js",
"three/addons/exporters/OBJExporter.js": "https://unpkg.com/three@0.184.0/examples/jsm/exporters/OBJExporter.js",
"three/addons/exporters/GLTFExporter.js": "https://unpkg.com/three@0.184.0/examples/jsm/exporters/GLTFExporter.js"
},
"integrity": {
"https://unpkg.com/three@0.184.0/build/three.module.js": "sha384-8FCZ1eVO6it4+pbec2aDtnTrwjWXZLJRC+MAGCIPDgsYnUrl/E0A2YlF8ioMKI/J",
"https://unpkg.com/three@0.184.0/build/three.core.js": "sha384-dw2ooPewaEIrAgl6oFDBmmBWCE9oW9LxRGcfwZ0hLvEprzo202wXl7vCYHRlSnOT",
"https://unpkg.com/three@0.184.0/examples/jsm/controls/OrbitControls.js": "sha384-4rziNxOBZKQ69i+w+f89KJ55TCYquwchVbByQwmaOeIOXdOU2PLDn3kOfXHwIJC9",
"https://unpkg.com/three@0.184.0/examples/jsm/exporters/OBJExporter.js": "sha384-nbwtoZENJD3Vq+ACK0CuGQdPMuDWHkamC2KJD70EV5nfg6jQjfppKOea07YJN+N3",
"https://unpkg.com/three@0.184.0/examples/jsm/exporters/GLTFExporter.js": "sha384-VofkvpG6HERhFCYbsUOHeNXBCqID2nfqkQqnVzE1jc/oPcz+qJ13ADdXH08hE+cQ"
}
}
</script>Build the model programmatically, as a THREE.Group composed of named parts:
- Compose primitives (BoxGeometry, CylinderGeometry, SphereGeometry, TorusGeometry, LatheGeometry, ExtrudeGeometry with Shape) before reaching for raw BufferGeometry; real objects decompose into far more primitives than you'd guess.
- NAME every mesh and every material ("hull", "walnut", "brass") — the names become the o / usemtl entries in the exported OBJ and the node names in the GLB, which is what makes the download usable in Blender.
- Use MeshStandardMaterial with a small curated palette (3-5 materials, shared across parts); set roughness/metalness deliberately. Textures don't survive the OBJ export — prefer geometry and material color over texture detail.
- Model in real-world meters, y-up, centered on the origin, base resting at the lowest y. Offset deliberately coplanar faces by ~0.001 so nothing z-fights.
- Curved surfaces need enough segments to read as smooth at full screen (32+ radial segments on feature surfaces), but don't tessellate what no one will see.
Show full SKILL.md (119 more words)Show less
The stage's toolbar gives the user OBJ + MTL (universal, geometry + per-material colors) and GLB (the modern interchange format — keeps the part hierarchy and PBR materials; imports cleanly into Blender, Maya, Cinema 4D, Unity, Unreal). Those two are the export formats on offer — when the user asks for something else (FBX, USDZ, STEP), say plainly that the stage exports OBJ + MTL and GLB.
Iterate with screenshots: the stage keeps its last frame readable, so the ordinary screenshot tools capture the live canvas — no extra steps. After editing a module file, reload with show_html before screenshotting (the iframe caches already-loaded modules). Look at the object from the default framing and refine silhouette, proportion, and material separation — the silhouette carries the object.
© asgeirtj, CC0-1.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in Anthropic/claude-design/skills/3d-object of asgeirtj/system_prompts_leaks.
Open the folder on GitHubat commit e31ec21
Compare with similar skills
3D Object next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| 3D Object this skillasgeirtj/system_prompts_leaks | 69k | — | ~1.1k | Automated safety check: Pass | CC0-1.0 | |
| Image to Three.js Modelimg2threejs/img2threejs | 18k | 1 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 | |
| Web CloneJane-xiaoer/claude-skill-web-clone | 1k | 1 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Threejs Game Directormajidmanzarpour/threejs-game-skills | 2.5k | — | ~2.2k | Automated safety check: Pass | MIT | |
| Threejs Gameplay Systemsvalkor-ai/loom | 1.2k | 1 repos | ~1.4k | Automated safety check: Pass | Apache-2.0 | |
| Threejs World Generationcalesthio/OpenMontage | 66k | — | ~2k | Automated safety check: Pass | AGPL-3.0 |
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Works with
Categories
Questions about 3D Object
What does 3D Object do?
three.js model, downloadable as OBJ or GLB. An agent skill from asgeirtj/system_prompts_leaks. 3D Object is an agent skill from asgeirtj/system_prompts_leaks.
When should I use 3D Object?
3D Object fits situations like: tasks that involve 3D graphics and WebGL.
How do I install 3D Object in Claude Code?
Run `npx skills add asgeirtj/system_prompts_leaks --skill 3d-object -a claude-code`. Or copy the skill folder (Anthropic/claude-design/skills/3d-object in asgeirtj/system_prompts_leaks) into .claude/skills/3d-object in your project. Claude Code loads it when a task matches its description.
How do I install 3D Object in Codex?
Run `npx skills add asgeirtj/system_prompts_leaks --skill 3d-object -a codex`. Or copy the skill folder (Anthropic/claude-design/skills/3d-object in asgeirtj/system_prompts_leaks) into .agents/skills/3d-object in your project. Codex loads it when a task matches its description.
Can I use 3D Object in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add asgeirtj/system_prompts_leaks --skill 3d-object -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/3d-object, .gemini/skills/3d-object, .github/skills/3d-object and .opencode/skills/3d-object in your project.
What does 3D Object need to run?
SKILL.md names no scripts, command-line tools or credentials: 3D Object is instructions for the agent only.
Does 3D Object access the network?
SKILL.md names 1 domain. As links in the text: unpkg.com. This is read from the text; nothing was executed.
Is 3D Object safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does 3D Object use?
3D Object is published under the CC0-1.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does 3D Object use?
About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to 3D Object?
Skills that share tags, products or a category with 3D Object: Image to Three.js Model (img2threejs/img2threejs, 18k stars), Web Clone (Jane-xiaoer/claude-skill-web-clone, 1k stars), Threejs Game Director (majidmanzarpour/threejs-game-skills, 2.5k stars) and Threejs Gameplay Systems (valkor-ai/loom, 1.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains 3D Object?
asgeirtj (a GitHub user) maintains it in asgeirtj/system_prompts_leaks, which has 69,211 GitHub stars. The repository holds 124 skills in this directory. The repository was last updated on October 8, 2026.
Source: asgeirtj/system_prompts_leaks on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.