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OwlKey Image Generation API
x402
OwlKey Image Generation API is a paid API for AI agents from www.owlkeyapi.com, paid per call via x402, $0.039/call, status unknown (last checked 2026-09-14).
Generates images from text prompts via a pay-per-call API, returning image data or URLs with OpenAI-compatible metadata.
Price / call$0.039
Success—
StatusUnknown
How this service works
Prompt-to-image generation API for agents. Returns generated image data or URLs with OpenAI-compatible metadata.
Output
Returns generated image data or URLs in an OpenAI-compatible response format, including metadata such as the model used, number of images generated, and per-image data (base64 or URL depending on output format).
Example use cases
Product mockup for e-commerce listing
“Create a single high-quality product image of a minimalist white ceramic coffee mug on a clean white background, 1024x1024, in PNG format.”
Social media visual for marketing campaign
“Generate 3 vibrant 1024x1024 images of a woman doing yoga at sunrise on a mountain top — I need options for our wellness brand's Instagram post.”
Concept art for game development
“Render a dark fantasy castle surrounded by storm clouds and lightning in a wide 1792x1024 format — high quality, for use as concept art in our game pitch.”
Technical details
Endpoint
POSThttps://www.owlkeyapi.com/x402/services/imageWhen to prefer
Choose this endpoint when an AI agent needs to generate images from text prompts in a pay-per-call, no-subscription model using the x402 micropayment protocol. It is well-suited for agents that need OpenAI-compatible image generation output without managing an OpenAI API key. Prefer it for agentic pipelines that require flexible per-request billing and support for options like background mode and output format selection.
Side effects
- Prompt too long (exceeds 4000 characters) — validation error returned
- Invalid size string format — may return an error or use a default size
- Model not available or misspelled — fallback to default model or error
- Payment failure via x402 protocol — request rejected without image generation
- n value outside 1–10 range — validation error
- Prompt contains policy-violating content — request rejected with content policy error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| n | number | Number of images. |
| size | string | Image size, such as 1024x1024. |
| model | string | Optional image model. |
| prompt | string | Image generation prompt. |
| quality | string | Optional image quality. |
| background | string | Optional background mode. |
| output_format | string | Optional output format. |
Tags
x402
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