# fastapi.online — 3D Render Generator

> fastapi.online — 3D Render Generator is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.012/call, status down (last checked 2026-09-15).

Generates a 3D render image of a specified object or scene, with optional seed for reproducibility

## Facts

- Endpoint: POST https://api.fastapi.online/generate-3d-render
- Price: $0.012/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fastapi-online-3d-render-generator-61ef205d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AzAy6PC8kqWAKcr4-vk4t

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fastapi-online-3d-render-generator-61ef205d -d '<json body>'
```

Example prompt: Generate a 3D render of a red leather armchair sitting in a sunlit room, using seed 42 so I can reproduce it later.

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call 3D render from a text description without signing up for an account, especially when crypto micropayments (USDC via x402) are available in your workflow. Ideal for agents that need reproducible renders via seeding and want to avoid subscription-based 3D generation services.

## Known failure modes

- Subject string is empty or exceeds 300 characters — validation error returned
- Invalid seed type (non-integer) causes a 422 Unprocessable Entity error
- Payment not provided or insufficient — 402 Payment Required response
- Model inference timeout for complex scenes
- Returned image may not accurately reflect highly specific or abstract subject descriptions

## How this service works

Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&amp;A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding &amp; crypto utilities, date/time calculators, geo/coordinate math, math &amp; finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.

## Output

Returns a 3D rendered image (likely as binary image data or a URL) depicting the described object or scene, generated by a self-hosted AI model. The seed parameter allows reproducible outputs when set to the same value.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "seed": {
   "type": "integer"
  },
  "subject": {
   "type": "string",
   "maxLength": 300,
   "minLength": 1,
   "description": "the object/scene"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastapi-online-3d-render-generator-61ef205d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.fastapi.online](https://www.zero.xyz/host/api.fastapi.online/llms.txt)