Sideload Avatar Generator

Generate 3D avatars from text prompts or reference images using Sideload.gg. Pay-per-use via the x402 protocol — $2 USDC per generation on Base.

Works with any x402 wallet. Bring your own wallet and private key — no proprietary wallet required.

What You Get

Each generation produces four formats:

Format	File	Use Case
GLB	`.glb`	Universal 3D — Three.js, Unity, Unreal, web viewers
VRM	`.vrm`	Avatar standard — VRChat, VTubing, social apps
MML	URL	Metaverse Markup Language — for MML-compatible worlds
PNG	`.png`	Processed reference image used for generation

🎭 Rendering Avatars with @pixiv/three-vrm

The VRM output is designed to work with @pixiv/three-vrm — the standard Three.js library for loading, displaying, and animating VRM avatars. If you're already building with Three.js, generated avatars plug right in with full skeleton support:

import * as THREE from 'three';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader';
import { VRMLoaderPlugin } from '@pixiv/three-vrm';

const loader = new GLTFLoader();
loader.register((parser) => new VRMLoaderPlugin(parser));

loader.load('https://aiml.sideload.gg/models/avt-xxx.vrm', (gltf) => {
  const vrm = gltf.userData.vrm;
  scene.add(vrm.scene);

  // Animate bone transforms, look-at, etc.
});

This makes it easy to generate an avatar with Sideload and immediately use it in any Three.js scene — games, social apps, virtual worlds, VTubing, and more.

For more on building interactive 3D experiences in the metaverse, see awesome-mml — a curated list of MML (Metaverse Markup Language) resources.

Prerequisites

Node.js 18+
An x402 payment token — sign a payment with your own wallet/signer and pass it via --x402-token. This skill never handles private keys.
```
# Check the cost first
node scripts/generate.js --probe

# Generate with your x402 token
node scripts/generate.js --prompt "..." --x402-token <base64-encoded-payment>
```
Use any x402-compatible client to obtain a payment token: Coinbase x402 SDK, Thirdweb x402, or your own signing flow.

Setup

npm install

Usage

Generate from Text Prompt

node scripts/generate.js --prompt "A cyberpunk samurai with glowing red armor" --x402-token <token>

Generate from Image URL

node scripts/generate.js --image https://example.com/character.png --x402-token <token>

Generate from Local Image

node scripts/generate.js --image /path/to/photo.jpg --x402-token <token>

Check Cost (No Payment)

node scripts/generate.js --probe

Check Job Status

node scripts/status.js avt-a1b2c3d4

Options

Flag	Description
`--prompt "text"`	Text description of the avatar
`--image <url-or-path>`	Reference image (URL or local file path)
`--x402-token <token>`	x402 payment token (required for generation)
`--probe`	Check cost without generating
`--output <name>`	Custom filename for downloaded files
`--no-download`	Skip downloading result files

API Reference

See SIDELOAD-API.md for the full API documentation, or visit sideload.gg/agents/raw.

Quick Reference

Generate:

POST https://sideload.gg/api/agent/generate
Headers: Content-Type: application/json, x-payment: <x402_token>

Text: { "type": "text", "prompt": "description" } Image: { "type": "image", "imageUrl": "https://..." }

Poll: GET https://sideload.gg/api/agent/generate/{jobId}/status (no auth needed)

Prompt Tips

Be specific about:

Appearance: clothing, colors, accessories
Style: realistic, anime, cartoon, cyberpunk
Features: armor, weapons, hairstyle, wings

Good prompts:

"A steampunk engineer with leather tool belt, copper mechanical arm, weathered pilot hat"
"An anime-style sorceress with long silver hair, glowing purple eyes, ornate golden staff"
"A futuristic soldier in white and blue power armor with glowing energy shield"

Image Tips

PNG, JPG, or WebP
Front-facing portraits or full-body shots work best
Clear outlines and distinct clothing/features
Higher resolution → better results

Rate Limits & Cost

$2 USDC per generation (x402 on Base, chain ID 8453)
10 generations per 30 minutes per wallet
Check Retry-After header on 429 responses