Standardmäßig ist der Prompt ausgewählt, der zuerst die Quelle prüft. Sie können zu einem direkten Befehl wechseln oder eine lokale Kopie herunterladen.
Quelldateien prüfen
Lesen Sie SKILL.md und alle von SkillsMP angezeigten Begleitdateien, bevor Sie sich für eine Installation entscheiden.
Mit Codex oder Claude installieren Kopieren Sie diesen Prompt, fügen Sie ihn in Codex, Claude oder einen anderen Assistant ein und lassen Sie die Skill-Seite prüfen und installieren.
Ein direkter Befehl überspringt den Prüf-Prompt. Prüfen Sie die Quelle, bevor Sie ihn ausführen.
Deterministic palette/matrix pixel art (not AI). Use for procedural tile art, color-quantized output, matrix sprites.
agent
typescript-frontend-engineer
user-invocable
false
command
/game-assets
allowed-tools
["Read","Write","Bash","Grep","Glob","Edit"]
routing
{"triggers":["pixel art","tile pattern","palette quantize","matrix sprite","meshy","meshyai","generate 3d model","text to 3d","image to 3d","world labs","gaussian splat","splat environment","game asset","fal ai","fal.ai","generate texture","generate image for game","3d character","game model","rig model","animate model","game environment","sketchfab","poly pizza","poly haven"],"not_for":"AI-generated pixel art, illustration, or character art (use image-gen) — this skill is deterministic palette/matrix generation, not an AI backend; ad-hoc workflow composition (use workflow skill)","pairs_with":["threejs-builder","typescript-frontend-engineer"],"complexity":"Medium","category":"game-development"}
Game Asset Generator Skill
Overview
This skill generates game-ready assets (3D models, Gaussian Splat environments, 2D sprites, images/textures) using AI APIs and free asset sources. It follows a three-phase workflow: DETECT the asset type -> GENERATE via the appropriate API or source -> INTEGRATE into the game. Only the relevant reference is loaded per task -- do not load all references upfront.
Scope: Use for AI-generated 3D models, world environments, pixel art sprites, concept art, textures, and sourcing free pre-built assets. Keep game engine scripting, physics, game loop logic, and shader authoring in threejs-builder after asset generation.
Phase 1: DETECT
Goal: Identify the asset type from the request and load the single corresponding reference.
If the required key is missing, the fallback chain applies -- load references/asset-sources.md alongside the primary reference.
Fallback chain: Meshy API -> Sketchfab search -> Poly Haven -> Poly.pizza -> BoxGeometry placeholder. All sources output GLB into the same path so game loading code does not change.
Gate: Asset type identified, relevant reference loaded. Proceed to Phase 2 only when gate passes.
Phase 2: GENERATE
Goal: Call the API or source to produce the asset. Follow the loaded reference exactly -- it is the authoritative guide for its API.
Core constraints (all asset types):
Download immediately -- Meshy retains assets only 3 days; World Labs SPZ files expire similarly. Never assume a URL will be valid tomorrow.
Output to a stable path -- write assets to public/assets/ or an equivalent game-accessible directory so integration code does not need path changes per asset.
Save the .meta.json sidecar -- every generated asset gets a .meta.json recording the prompt, model, generation timestamp, and asset ID. Required for regeneration and auditing.
Validate the output file -- after download, confirm file size > 0 and extension matches expected type (GLB, SPZ, PNG, etc.) before proceeding.
Per-type generation summary (read the reference for full API details):
3D Model (Meshy): Two-step pipeline -- preview (fast, low quality, confirms prompt works) -> refine (full quality). Auto-rig only for humanoids meeting all criteria: bipedal, textured, clearly defined limbs. Animate rigged models with walk/run/idle presets. Post-process with scripts/optimize-glb.mjs for 80-95% size reduction before integration.
2D Sprite (code-only): Canvas-based generation -- no API call. Load references/pixel-art-sprites.md and generate sprites from the palette and matrix system defined there. Works without any API key.
Image / Texture (fal.ai): Queue-based API -- submit job -> poll for result. Choose model endpoint based on need (GPT Image 1.5 for transparency, Nano Banana 2 for speed). Use #00FF00 chroma-key background when the asset needs transparency extraction.
Gate: Asset file downloaded and validated (size > 0, correct extension). .meta.json saved. Proceed to Phase 3 only when gate passes.
Phase 3: INTEGRATE
Goal: Load the generated asset into the game scene correctly.
Core constraint: Use SkeletonUtils.clone() -- never .clone() -- for animated models. Regular .clone() breaks skeleton bindings and leaves the model in a permanent T-pose. This is the single most common integration failure with rigged GLBs.
Gaussian Splat (World Labs) -- see references/worldlabs.md for the @sparkjsdev/spark SplatMesh integration. The Y-axis flip and raycast direction inversion are required, not optional.
Animation playback:
const mixer = newTHREE.AnimationMixer(model);
const action = mixer.clipAction(gltf.animations[0]); // walk/run/idle from Meshy
action.play();
// In animation loop:
mixer.update(deltaTime);
Gate: Asset visible in scene. No console errors. Animations play if applicable.
No API key available, "free asset", "find model", "download asset", generation failed
asset-sources.md
Existing Assets
references/meshyai.md
meshyai.md
3D model generation request
references/worldlabs.md
worldlabs.md
Environment / Gaussian Splat request
references/fal-ai-image.md
fal-ai-image.md
Image, texture, or concept art request
references/asset-sources.md
asset-sources.md
No API key, fallback chain, or "find free asset"
references/pixel-art-sprites.md
pixel-art-sprites.md
2D sprite or pixel art request
Error Handling
Error: "GLB loads but model is in T-pose"
Cause: Used .clone() instead of SkeletonUtils.clone() on a rigged model.
Solution: Replace gltf.scene.clone() with SkeletonUtils.clone(gltf.scene). Import from three/addons/utils/SkeletonUtils.js.
Error: "Meshy task stuck in PENDING"
Cause: API key invalid, quota exceeded, or Meshy service issue.
Solution:
Verify MESHY_API_KEY is set in ~/.env and the value is current
Check quota at app.meshy.ai
If quota exhausted, fall through to references/asset-sources.md fallback chain
Use status mode: node scripts/meshy-generate.mjs status <task_id>
Error: "Downloaded GLB is 0 bytes or corrupt"
Cause: URL expired (Meshy 3-day limit) or network error during download.
Solution: Regenerate -- do not attempt to repair a corrupt GLB. Resubmit using the prompt saved in .meta.json.
Error: "Gaussian Splat renders but objects fall through floor"
Cause: Raycast direction inverted after Y-axis flip on the SplatMesh.
Solution: Load references/worldlabs.md -- the fix is in the raycast inversion section.
Error: "fal.ai request returns 401"
Cause: FAL_KEY missing or incorrectly formatted. fal.ai uses Key $FAL_KEY format (not Bearer).
Solution: Confirm FAL_KEY is in ~/.env. Authorization header must be Key <your-key> -- not Bearer <your-key>.
Error: "gltf-transform command not found"
Cause: @gltf-transform/cli not installed globally.
Solution: npm install -g @gltf-transform/cli
References
Reference
When to load
Content
references/meshyai.md
3D model generation request
Meshy API: text-to-3D, image-to-3D, rig, animate, status polling, optimize-glb
references/worldlabs.md
Environment / Gaussian Splat request
World Labs Marble API: SPZ generation, SplatMesh renderer, Y-flip gotcha
references/fal-ai-image.md
Image, texture, or concept art request
fal.ai: 8 model endpoints, queue API, cost tracking, chroma-key
references/asset-sources.md
No API key, fallback chain, or "find free asset"
Sketchfab, Poly Haven, Poly.pizza search and download workflows
references/pixel-art-sprites.md
2D sprite or pixel art request
Canvas sprite matrices, palette system, animation frames (no API needed)
