Polyfork
Remixable 3D assets
Most 3D assets are a finished mesh: what you download is what you get. A remixable asset is a small program instead, so one purchase covers a whole family of models, and your AI can build the exact one your scene needs.
This is Toy Rocket, a real published asset rebuilding live in your browser. Drag to orbit; the controls on the left are the same ones on its store page.
What you are turning
Curated colorways
Whole schemes picked by the person who built the asset, so a palette change never lands you somewhere ugly. This one ships 5: mint cream, red white, navy gold, coral teal, moon mono.
Per-part colours
Every distinct zone is addressable on its own, so you can repaint one part without touching the rest. Here that is 7 zones: body, nose cone, fins, thruster pods, struts, booster ring, fin panels.
Shape options
Knobs that change the geometry itself, not just the paint: proportions, how round or chunky the form reads, how many of a repeated feature, and whole optional parts.
Two guarantees
First, the default is the asset: calling the factory with no arguments reproduces exactly what you saw on the store page, verified against the approved model before it publishes. Second, a variant costs what the asset costs: every knob value is checked against the triangle budget, so reshaping never quietly doubles the model you are shipping to a browser.
How your agent drives it
The knobs are published as JSON, and every one carries a plain-language description written for a machine reader. An agent can read the schema, work out what the asset can change, and produce the variant your scene needs without you touching a slider.
// 1. ask what this asset can change
const schema = await (await fetch(
'https://polyfork.dev/cdn/toy-rocket-e51241-params.json')).json();
// schema.params -> typed knobs, each with a `describe` for you and your agent
// schema.presets -> curated colourways, each a map of zone -> hex
// 2. build the variant
import { createAsset } from 'https://polyfork.dev/cdn/toy-rocket-e51241.mjs';
scene.add(createAsset()); // exactly the published asset
scene.add(createAsset({ colorway: 'red-white' })); // your variant
The full agent guide, including the catalog API and paid downloads, lives at /agents.
FAQ
What is a remixable asset?
An asset that ships as a factory instead of a frozen mesh: a function plus a typed list of knobs (curated colorways, per-part colours, shape options). Calling it with no arguments reproduces the published asset exactly; passing knob values gives you a variant at the same triangle budget.
Do I need to know how to code?
No. Every knob works in the store viewer, and the GLB you download has your choices baked in. Developers get more: the ES module exposes the same knobs as typed parameters.
Will a variant cost more triangles?
No. Every knob value is checked against the asset's triangle budget before it is published, so a variant never quietly costs more than the asset you bought.
Can my AI agent use this?
That is the point of publishing the schema. Each knob carries a plain-language description written for a machine reader, so an agent can fetch /cdn/{id}-params.json, understand what the asset can change, and build the variant your scene needs.
What if I want a change no knob covers?
Buy the asset and edit the module: it is readable, commented three.js code, not an opaque binary. The knobs cover the variations we thought were worth curating, not the limit of what you can do.