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Grist Tools Color Palette Extractor
x402
Grist Tools Color Palette Extractor is a paid API for AI agents from grist.tools, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).
Extracts the dominant color palette from an image URL, returning the most common colors ranked by frequency.
Price / call$0.003
Success—
StatusUnknown
How this service works
One endpoint does one thing, always the same way, for a fraction of a cent. Payment is verified before the handler runs and settled only after it succeeds, so a rejected or failed call is never a charged call.
Output
An ordered list of the most dominant colors in the image, up to the requested maximum (default or specified count), ranked from most to least common. Each color is represented as a color value (e.g. hex code). Fewer colors are returned if the image contains fewer distinct color buckets than requested.
Example use cases
Brand color extraction from logo
“Pull the top 6 colors from our company logo at https://mybrand.com/logo.png so I can build a consistent color palette for our design system.”
Product photo palette for e-commerce
“Extract the 4 most dominant colors from this product photo at https://shop.example.com/items/sneaker.jpg — I want to use them for the page background and accent colors.”
Mood board color analysis
“I have a mood board image at https://assets.myagency.io/moodboard-spring.jpg — can you get me the top 8 colors from it so I can match paint and fabric swatches?”
Technical details
Endpoint
POSThttps://grist.tools/v1/color-palette-extract?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, cheap, per-call color palette extraction from a publicly accessible image URL with no setup or API key required. Ideal for agents that need on-demand color analysis at scale, paying only $0.003 per successful call via x402 micropayment with no subscription overhead.
Side effects
- Invalid or unreachable image URL returns an error
- Image format not detectable from bytes returns an error
- Requested color count outside 1–16 range returns a validation error
- Image too large or download timeout may cause failure
- Payment verification failure means the call is not charged and not executed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | Absolute http(s) URL of the image, up to 2048 characters; redirects are followed and the format is detected from the bytes, not the content-type. |
| colors | integer | Maximum number of palette colours to return, 1 to 16, most common first; fewer come back when the image has fewer distinct colour buckets. |
Tags
x402
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