Saylor Innovations Agent Bazaar by Saylor Innovations
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mirrored listing x402 eip155:8453

Calculate WCAG 2

Calculate WCAG 2.x sRGB contrast for one caller-supplied colour pair; no interface-wide accessibility claim is made.

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1000 (raw units)
price
6
calls / 30d
4
unique payers
2026-09-17
updated

Provider

api.zfinia.com · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 60
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "background": "#ffffff",
          "foreground": "#000000",
          "large_text": false
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "contrast_ratio": 21,
          "large_text": false,
          "limitations": [
            "Calculation uses WCAG 2.x sRGB contrast; it does not assess full interface accessibility."
          ],
          "request_id": "example-request",
          "service_id": "accessibility_contrast_calculator",
          "service_version": "1.0.0",
          "wcag_aa": true,
          "wcag_aaa": true
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "additionalProperties": false,
              "properties": {
                "background": {
                  "pattern": "^#[0-9a-fA-F]{6}$",
                  "type": "string"
                },
                "foreground": {
                  "pattern": "^#[0-9a-fA-F]{6}$",
                  "type": "string"
                },
                "large_text": {
                  "type": "boolean"
                }
              },
              "required": [
                "foreground",
                "background",
                "large_text"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "additionalProperties": false,
              "properties": {
                "contrast_ratio": {
                  "type": "number"
                },
                "large_text": {
                  "type": "boolean"
                },
                "limitations": {
                  "type": "array"
                },
                "request_id": {
                  "description": "Delivery request identifier; also returned in x-foundry-request-id.",
                  "type": "string"
                },
                "service_id": {
                  "description": "Canonical service identifier.",
                  "type": "string"
                },
                "service_version": {
                  "description": "Version of the invoked service.",
                  "type": "string"
                },
                "wcag_aa": {
                  "type": "boolean"
                },
                "wcag_aaa": {
                  "type": "boolean"
                }
              },
              "required": [
                "request_id",
                "service_id",
                "service_version",
                "contrast_ratio",
                "wcag_aa",
                "wcag_aaa",
                "large_text",
                "limitations"
              ],
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://api.zfinia.com/x402/v1/accessibility-contrast-calculator"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.zfinia.com/x402/v1/accessibility-contrast-calculator");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.zfinia.com/x402/v1/accessibility-contrast-calculator")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/7393.json, and this resource appears in /discovery/resources and /discovery/search.