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Photo Colorize for Agents
x402
Photo Colorize for Agents is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Colorizes a single grayscale photo (PNG, JPEG, or WebP) into a color PNG for $0.01 USDC, returning the colorized 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
A colorized PNG image (base64-encoded or as a binary response) along with a SHA-256 receipt confirming the transformation. The colorization is an AI estimate of plausible colors, not a photographic restoration.
Example use cases
Colorize historic family photograph
“I have a scanned black-and-white family photo from the 1940s in JPEG format — can you colorize it so I can see what it might have looked like in color?”
Restore grayscale portrait for print
“I've got a grayscale portrait PNG I need to turn into color before sending it to the printer — can you colorize it for me?”
Add color to archival documentary image
“I'm working on a documentary and I have a black-and-white WebP image from a historical archive — colorize it so I can use it in a color segment.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/colorize-photoWhen to prefer
Choose this endpoint when you need a quick, low-cost ($0.01 USDC) colorization of a single opaque grayscale image without needing an API key or subscription. Ideal for agent workflows that encounter black-and-white photos and need a plausible color version on the fly. Not suitable for batch processing, images with transparency, or cases requiring photographic accuracy.
Side effects
- Image contains an alpha channel — rejected because only opaque images are accepted
- Image exceeds 256 KiB after base64 encoding — rejected due to size limit
- Invalid or malformed base64 string — returns parse error
- Non-image or unsupported format submitted — returns format rejection error
- Payment of $0.01 USDC not fulfilled — returns 402 Payment Required
- Completely blank or solid-color image — may produce poor colorization with no error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| image_base64 | string | One opaque base64 PNG, JPEG, or WebP up to 256 KiB. Alpha and model fields are rejected. |
Output
Schema · Response
{
"type": "json",
"example": {
"image_url": "https://api.delx.ai/api/v1/generated-colorizations/example.png",
"sale_price_usdc": 0.01
}
}Tags
x402
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