Three.js Game Skills is a collection of agent skills for creating playable browser games with Three.js, a JavaScript library for rendering interactive 3D graphics. It is for users building games with gameplay, graphics, interfaces, generated assets, debugging, and release checks, with bundled Vite, TypeScript, and Three.js materials plus testing templates. The catalogue entries are the skills and instruction that coordinate these parts of the game-building workflow.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add majidmanzarpour/threejs-game-skills --skill threejs-image-generatorgit clone --depth 1 https://github.com/majidmanzarpour/threejs-game-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/majidmanzarpour/threejs-game-skills/threejs-image-generator)<a href="https://agentmods.dev/skills/majidmanzarpour/threejs-game-skills/threejs-image-generator"><img src="https://agentmods.dev/badge/skills/majidmanzarpour/threejs-game-skills/threejs-image-generator/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/majidmanzarpour/threejs-game-skills/threejs-image-generator"><img src="https://agentmods.dev/badge/skills/majidmanzarpour/threejs-game-skills/threejs-image-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00076 | $0.01204 |
| Opus 5 | $0.00038 | $0.00602 |
| Sonnet 5 | $0.00015 | $0.00241 |
| Haiku 4.5 | $0.00008 | $0.00120 |
Grade A, and why
threejs-image-generator scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Three.js Image Generator
The 2D layer for Three.js games: concepts, textures, decals, UI art, and the source images that feed threejs-3d-generator for image-to-3D.
Resolve <this-skill-dir> from the actual loaded skill file. Resolve sibling skills beside it first, then use the runner's discovered paths. Do not mix installed versions or assume a particular home directory.
When to use
- Image-to-3D references: characters, creatures, buildings, ships, cars, weapons, props, pickups, terrain modules.
- Texture and material references: terrain, road, rock, sand, metal, sci-fi panels, trim sheets, decals, hazard labels, signs.
- Environment plates: skies, backdrops, city horizons, nebulas, menu backgrounds, parallax layers.
- UI art: logos, faction marks, icons, item cards, ability badges, cockpit decals, GUI panels, title art.
- Editing an existing image: style variants, cleanup, palette alignment, concept refinement.
For premium graphics work with generation in scope, generate the high-value 2D surfaces rather than defaulting to hand-coded CSS and flat colors. Respect explicitly procedural art and external-service restrictions. Choose assets from the game's design, not a fixed quota of logos, skies, or icons.
API key
The script reads --api-key or GEMINI_API_KEY. Keys never go in skill files, game code, or reports.
uv run <this-skill-dir>/scripts/generate_image.py probe # GEMINI_API_KEY=SET|MISSING
Keys defined only in a shell profile can be absent from the process env. If the plain probe unexpectedly prints MISSING, use threejs-game-director/scripts/probe_asset_credentials.sh, which sources the profile and probes all three providers.
Commands
Run from the game project so output lands in it:
uv run <this-skill-dir>/scripts/generate_image.py \
--prompt "your image description" --filename assets/concepts/output.png --resolution 2K
uv run <this-skill-dir>/scripts/generate_image.py \
--input-image assets/concepts/ship.png \
--prompt "battle-worn red racing livery with clearer material zones" \
--filename assets/concepts/ship-red-livery.png --resolution 2K
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago Changed · -37 lines · -11 tokens per session 3abbf9e96413
- 11d ago First seen · 117 lines · 87 tokens per session scan A c688368cf955
threejs-image-generator is a skill published in the GitHub repository majidmanzarpour/threejs-game-skills (1,939 stars, last pushed 5d ago), licensed MIT. It adds 76 tokens to every session and 1,204 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
html-ppt-zhangzara-8-bit-orbit
A gamer's journey building a retro-arcade collection — the obsession, the hunt, and what the machines came to mean. Built as a decision-grade story deck for friends, hobby community.
screenshot-game-view
Capture a screenshot of the Unity Editor's Game View by reading its internal render texture directly. Image size matches the current Game View resolution; the tool corrects Y-flip on DirectX / Metal so the output is always upright. Requires an open Game View window.
sprite-gen
A pipeline for turning generated 2D game-character images into transparent sprite sheets, which store animation frames for a game.
audio-design
Implement game audio practice — bus/mixer architecture and gain in decibels, ducking (sidechain), adaptive/dynamic music via layering and re-sequencing, SFX variation, and beat synchronization. Engine-neutral. Use when the user mentions audio mixing, audio buses, adaptive/dynamic music, ducking, SFX variation, music…
create-game-assets
Plan, generate, source, normalize, and validate cohesive visual game assets. Use for art direction, style bibles, sprites, tilesets, backgrounds, UI art, icons, textures, concept art, or 3D asset briefs.
threejs-world-generation
Build deterministic, editable, free-viewpoint Three.js worlds from text or structured briefs. Use for cinematic 3D terrain, semantic regions, procedural biomes, explicit landmarks, environmental scattering, camera fly-throughs, world diagnostics, or requests for a real 3D environment rather than generated 2D footage.…