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fastapi.online Image Generation
x402
fastapi.online Image Generation is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.01/call, status down (last checked 2026-10-12).
Generates images from text prompts via a self-hosted AI inference endpoint, billed at $0.02 USDC per call with no signup required
Price / call$0.01
Success—
StatusDown
How this service works
Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & 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 image (as binary data or a URL) produced by the self-hosted AI image generation model based on the provided text prompt, charged at $0.02 USDC per call via x402 payment protocol.
Example use cases
Quick AI art for a blog post
“Create an image of a futuristic city skyline at night with neon lights and flying cars for my sci-fi article — I want to pay per call without setting up an account.”
Product mockup image generation
“Generate a clean product photo of a minimalist white coffee mug on a wooden table with soft natural lighting — I need it for a marketing mockup and want to pay with crypto.”
Social media visual creation
“Make an image of a golden retriever puppy playing in autumn leaves in a park, bright and cheerful style, for a social media post.”
Technical details
Endpoint
POSThttps://api.fastapi.online/image?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need image generation with no signup or subscription, want to pay per call using USDC cryptocurrency, or are building an agent that requires frictionless, pay-as-you-go image synthesis without API key management overhead.
Side effects
- 402 Payment Required if USDC payment is not attached or insufficient
- Invalid or missing prompt results in a 400 Bad Request
- Model inference timeout for complex prompts
- Rate limiting or server overload returning 503
- Malformed payment header causing payment rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| seed | integer | |
| steps | integer | |
| width | integer | |
| height | integer | |
| prompt | string | |
| negative_prompt | string |
Tags
x402
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