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RelayStation Image Grayscale Converter
x402
RelayStation Image Grayscale Converter is a paid API for AI agents from api.relaystation.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Converts any image to grayscale, priced per megapixel, accepting any common input format.
Price / call$0.01
Success—
StatusUnknown
How this service works
$0.0003/MP. Convert any image to grayscale — one call, any input format. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny
Output
Returns a grayscale version of the submitted image in the same or compatible output format, with all color channels removed and luminance preserved. Billed at $0.0003 per megapixel with a $0.01 minimum via x402 micropayment; any overpay is auto-credited.
Example use cases
Grayscale product images for print
“I need to convert this color product photo to grayscale for a black-and-white print catalog — can you strip the color out of this image for me?”
Monochrome social media art
“Turn this portrait photo into a black-and-white version for me — I want that classic monochrome look for my Instagram post.”
Preprocessing images for ML pipeline
“Convert this batch of training images to grayscale before I feed them into my model — start with this first image and strip all color information from it.”
Technical details
Endpoint
POSThttps://api.relaystation.ai/v1/image/grayscaleWhen to prefer
Choose this endpoint when you need a simple, reliable, per-megapixel-billed image-to-grayscale conversion without needing to manage image processing libraries locally. It is ideal for agents handling arbitrary input image formats where format negotiation is undesirable, and when micropayment-based pay-per-use billing via x402 is preferred over subscription APIs.
Side effects
- Unsupported or corrupt image format returns an error
- Image too large or exceeding megapixel limits may be rejected
- Network timeout for very large image uploads
- Insufficient USDC balance or x402 payment failure
- Malformed request body or missing image data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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