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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 2026-09-13).
Submits one or more AI image generation requests to the imgnAI Katana service and returns generated image responses
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 containing a status string, a request_id for tracking, and a responses array with the generated image data or references for each submitted generation request.
Example use cases
Example prompt
“Generate an image of a futuristic neon-lit cyberpunk cityscape at night with rain-soaked streets using imgnAI Katana — submit it as a single generation request.”
Technical details
Endpoint
POSThttps://kat.imgnai.com/v1/generation-requestsWhen to prefer
Choose this endpoint when you need to generate AI images specifically through imgnAI's Katana platform, especially in agentic workflows that support x402 micropayment protocol. Ideal when you want to submit one or multiple image generation requests in a single call with optional client-side request tracking via client_request_id.
Side effects
- Invalid or empty requests array returns 400 error
- Missing required fields in generation request objects causes validation failure
- Payment failure via x402 protocol results in 402 Payment Required
- Rate limiting or quota exceeded returns 429 error
- Malformed client_request_id causes request rejection
- Unsupported model or generation parameters return 422 error
Input
{
"requests": [
{
"model": "katana-v1",
"width": 512,
"height": 512,
"prompt": "A futuristic neon-lit cyberpunk cityscape at night with rain-soaked streets",
"num_images": 1
}
],
"client_request_id": "test-qa-001"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| requestsrequired | array |
Output
{
"status": "failed",
"metadata": {
"network": "none",
"paid_usdc": "0",
"settlement": "none",
"paid_amount": "0",
"transaction": "none",
"billing_source": "x402_prepaid_exact"
},
"requests": [
{
"type": "unknown"
}
],
"responses": [
{
"type": "unknown",
"error": {
"code": "invalid_type",
"field": "requests[0].type",
"message": "type must be image or video.",
"retryable": false
},
"job_id": "74a5ad3b-78aa-4994-a105-d1d75cbd0b46",
"status": "rejected",
"metadata": {
"model": "",
"billing_source": "x402_prepaid_exact"
}
}
],
"created_at": "2026-06-16T17:42:53.618338+00:00",
"request_id": "b981a7f4-050c-414c-8af0-c1a3809bff2a",
"updated_at": "2026-06-16T17:42:53.623154+00:00",
"client_request_id": "test-qa-001",
"poll_after_seconds": null
}Schema · Response
{
"type": "object"
}Tags
x402
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