Extract structured metadata from any web page — title, author, publication date, Open Grap

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "category": "content-extraction",
    "discoverable": true,
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "url": "https://example.com/article"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "author": "John Smith",
          "canonical_url": "https://example.com/article",
          "date": "2025-01-15",
          "language": "en",
          "og_tags": {
            "description": "A sample article",
            "image": "https://example.com/img.jpg",
            "title": "Example Article"
          },
          "reading_time_minutes": 5,
          "title": "Example Article Title",
          "word_count": 1250
        },
        "type": "json"
      }
    },
    "schema": {
      "properties": {
        "input": {
          "required": [
            "method"
          ]
        }
      }
    },
    "tags": [
      "web",
      "extract",
      "summary",
      "ai"
    ]
  }
}

curl "https://content.hugen.tokyo/content/metadata"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://content.hugen.tokyo/content/metadata");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://content.hugen.tokyo/content/metadata")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header