Index onlineMerchant portal
Api Endpoint

Saylor Innovations WCAG Color Co

WCAG contrast ratio between two colors, with AA and AAA pass/fail

Open interactive test console

Offering

Provider
saylorinnovations.com
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
General Utilities
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://saylorinnovations.com/api/color/contrast
MIME type
Not provided
First seen
2026-10-16T01:51:20.002Z
Last seen
Tags
color, contrast, design, WCAG

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7"
  }
]

Observed health

Status
Healthy
Latest latency
166 ms
Average latency
235 ms
HTTP status
402
Last checked
Reachability
100% over 5 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "method": {
      "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE",
        "HEAD"
      ],
      "type": "string"
    },
    "queryParams": {
      "properties": {
        "bg": {
          "description": "background hex (query)",
          "type": "string"
        },
        "fg": {
          "description": "foreground hex (query)",
          "type": "string"
        }
      },
      "required": [
        "fg",
        "bg"
      ],
      "type": "object"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method"
  ],
  "type": "object"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET",
            "POST",
            "PUT",
            "PATCH",
            "DELETE",
            "HEAD"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "bg": {
              "description": "background hex (query)",
              "type": "string"
            },
            "fg": {
              "description": "foreground hex (query)",
              "type": "string"
            }
          },
          "required": [
            "fg",
            "bg"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "background": {
              "type": [
                "string",
                "null"
              ]
            },
            "contrast_ratio": {
              "description": "WCAG contrast ratio from 1 to 21",
              "type": "number"
            },
            "foreground": {
              "type": [
                "string",
                "null"
              ]
            },
            "source": {
              "description": "Data source the values come from",
              "type": [
                "string",
                "null"
              ]
            },
            "wcag": {
              "type": "object"
            }
          },
          "required": [
            "contrast_ratio",
            "wcag"
          ],
          "type": "object"
        },
        "type": {
          "const": "json",
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}