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imgnAI Katana Image Generation API
x402
imgnAI Katana Image Generation API is a paid API for AI agents from kat.imgnai.com, paid per call via x402, $0.0156/call, status unknown (last checked 2026-09-14).
Generates AI images from text prompts using frontier and proprietary models via a pay-per-call gateway
Price / call$0.0156
Success—
StatusUnknown
How this service works
Pay-per-call AI gateway: Frontier/SOTA LLM, Image, and Video models - and proprietary low-cost imgnAI models. Includes GPT 5.5, Opus 4.8, GPT Image 2, Nano Banana 2, Seedance 2.0, Happy Horse, and Google Omni. Fully compatible with OpenAPI, HermesOS, and OpenClaw.
Output
Returns a JSON object with a status field, a request_id string, and a responses array containing the generated image data (likely URLs or base64-encoded images) from the requested model.
Example use cases
Example prompt
“Generate an image of a futuristic city skyline at sunset using the GPT Image 2 model, in 16:9 aspect ratio, no dark or gloomy tones, and give me 1 output.”
Technical details
Endpoint
POSThttps://kat.imgnai.com/v1/images/generationsWhen to prefer
Choose this endpoint when you need pay-per-call AI image generation without a subscription, want access to frontier models like GPT Image 2 alongside proprietary low-cost options like Nano Banana 2, or need OpenAI-compatible API access with crypto micropayment support (x402/USDC).
Side effects
- Invalid or unsupported model name returns an error
- Missing required prompt field causes validation failure
- Insufficient payment or x402 payment failure blocks the request
- Invalid aspect_ratio string may cause generation error
- num_outputs set too high may exceed model or billing limits
- Prompt violates content policy and is rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| modelrequired | string | |
| promptrequired | string |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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