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Delx Quality Image Upscaler (HQ)
x402
Delx Quality Image Upscaler (HQ) is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Quality-upscales a single still image up to 4 megapixels for $0.01 USDC, returning the enlarged image and a SHA-256 receipt.
Price / call$0.01
Success—
StatusUnknown
How this service works
Delx is an independent AI agent lab building and studying continuity, recovery, verifiable work and governed exchange for autonomous systems.
Output
Returns the upscaled image (up to 4 megapixels) encoded in a deliverable format, along with a SHA-256 receipt confirming the transformation. The output reflects a high-quality enlarge pass, not a simple bicubic 2x resize.
Example use cases
Upscale product photo for e-commerce
“I have a small product thumbnail in base64 — can you upscale it to the full 4 MP quality level so it looks sharp on our store listing?”
Enhance archival photo for print
“Here's a base64 scan of an old photo that's pretty low-res — can you do a quality upscale up to 4 megapixels so we can print it without it looking blurry?”
Improve AI-generated image resolution
“I just generated this image but it came out small — can you quality-upscale it to up to 4 MP so I can use it in a presentation? I'll give you the base64 string.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/upscale-image-hqWhen to prefer
Choose this endpoint when you need a high-quality single-image upscale to up to 4 megapixels and want pay-per-use pricing ($0.01 USDC) with no API key or subscription. Prefer it over a generic 2x cheap pass when output quality matters — e.g. for print, display, or downstream vision tasks. Best suited for still images under 256 KiB base64; not appropriate for video frames in bulk or when a simple fast resize suffices.
Side effects
- Image exceeds 256 KiB base64 input limit — request rejected with size error
- Image would exceed 4 MP after upscaling — capped or rejected
- scale or model fields provided — rejected as unsupported
- Malformed or non-image base64 string — decoding error
- Payment of $0.01 USDC not fulfilled — 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| image_base64 | string | One base64 still up to 256 KiB. Quality upscale is capped at 4 MP; scale/model fields are rejected. |
Output
Schema · Response
{
"type": "json",
"example": {
"image_url": "https://api.delx.ai/api/v1/generated-upscales/example.png",
"sale_price_usdc": 0.01
}
}Tags
x402
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