# fastapi.online — AI Wallpaper Generator

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

Generates a unique AI-created wallpaper image based on a text theme and optional seed value

## Facts

- Endpoint: POST https://api.fastapi.online/generate-wallpaper
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fastapi-online-ai-wallpaper-generator-640c908a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6851__3QGPkkak1YZscV0

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-ai-wallpaper-generator-640c908a -d '<json body>'
```

Example prompt: Generate me an AI wallpaper with a 'cyberpunk city at night with neon reflections on wet streets' theme using seed 42.

## When to prefer this

Choose this endpoint when you need a quick, cheap ($0.012 USDC), no-signup AI-generated wallpaper from a simple text theme, especially when reproducibility via seed is important. Prefer it over larger cloud image generators when cost per call matters, no account creation is desired, and the output is specifically sized/styled as a wallpaper.

## Known failure modes

- Theme string too long (>300 chars) or empty — validation error
- Invalid seed type (non-integer) — schema validation failure
- Payment failure via x402 protocol — 402 response requiring crypto payment
- Model inference timeout — service unavailable or slow response
- Missing required theme field — 422 Unprocessable Entity

## 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 generated wallpaper image (likely as binary image data or a URL to the generated image) based on the provided theme string and optional integer seed for reproducibility.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastapi-online-ai-wallpaper-generator-640c908a/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)