WDH.sh — QR Codes

[
  {
    "error": "payment_required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "description": "QR code generation."
        },
        "payTo": "0x04b563909fdAFEACE9cba26f1848141bd140D741",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://qr.wdh.sh/qr",
      "tags": [
        "qr-codes",
        "images",
        "generator"
      ],
      "iconUrl": "https://qr.wdh.sh/favicon.ico",
      "description": "Generate a QR code as a PNG or SVG: POST the text or URL to encode (with an optional size from 64 to 2048px) and get back the image. Useful for any \"scan to view\" moment — signage, business cards, slides — or to encode a public wallet address for x402 funding and top-ups.",
      "serviceName": "QR Hero"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "data": "https://example.com",
              "size": 512,
              "format": "png"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "note": "Response body is the raw QR image bytes (PNG) or SVG markup.",
              "contentType": "image/png"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "data"
                  ],
                  "properties": {
                    "data": {
                      "type": "string",
                      "description": "Text or URL to encode in the QR code."
                    },
                    "size": {
                      "type": "integer",
                      "maximum": 2048,
                      "minimum": 64,
                      "description": "Image edge length in pixels (clamped to 64-2048)."
                    },
                    "format": {
                      "enum": [
                        "png",
                        "svg"
                      ],
                      "type": "string",
                      "description": "Output image format."
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]