SERVICE / DETAILother

WebberSites x402 Data API

GET api.webbersites.com/api/a11y/contrast

OPEN SERVICE ↗
SONAR SCORE0.740
LIVE PRICE0.001000
BAZAAR LIVEcompatible
CDP INDEXEDno
DECISION EVIDENCE

Why an agent can trust this route.

10 observations in the last 24h
HANDSHAKE SUCCESS100.0%402 challenge reachable
PAID DELIVERY0.0%settlement observed
P90 LATENCY2211msrecent response window
PRICE DRIFT0.0%advertised vs observed

Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.

SONAR PROBE HISTORY / 30D

Observed outcomes

JSON ↗
LIVE ENDPOINT METADATA

WCAG contrast ratio between two colors — the check the URL-based a11y endpoint can't do. Give a foreground and background color (hex or rgb()); returns the exact ratio and AA/AAA pass/fail for normal text, large text, and UI components, with a plain-English verdict. ?fg=&bg=

Resource: api.webbersites.com/api/a11y/contrast

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0xdd5fcEa81CA6f1EB39FEd5B973DE794293B81ba6

Payment methods: — · Last validation: 2026-10-15 11:27:07.919+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method"
    ],
    "properties": {
      "type": {
        "type": "string",
        "const": "http"
      },
      "method": {
        "enum": [
          "GET"
        ],
        "type": "string"
      },
      "queryParams": {
        "type": "object",
        "required": [
          "fg",
          "bg"
        ],
        "properties": {
          "bg": {
            "type": "string",
            "description": "Background color — hex or rgb()"
          },
          "fg": {
            "type": "string",
            "description": "Foreground/text color — hex (#111 or #111111) or rgb()"
          }
        }
      }
    },
    "additionalProperties": false
  },
  "output": {
    "type": "object",
    "required": [
      "type"
    ],
    "properties": {
      "type": {
        "type": "string"
      },
      "example": {
        "type": "object",
        "properties": {
          "passes": {
            "type": "object"
          },
          "summary": {
            "type": "string"
          },
          "contrast_ratio": {
            "type": "number"
          }
        }
      }
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xdd5fcEa81CA6f1EB39FEd5B973DE794293B81ba6",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0xdd5fcEa81CA6f1EB39FEd5B973DE794293B81ba6",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "1000"
    }
  ]
}
METADATA PROVENANCE

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.