AI-powered structured extraction: give a URL plus a natural-language prompt and/or a JSON

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x23Fc725e8EAa1c58900C6507Ba89be99a6DFc75d",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "prompt": "What is the x402 protocol?",
          "url": "https://example.com"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "result": "AI-powered structured extraction: give a URL plus a natural-language prompt and/or a JSON Schema, and get back clean str"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "additionalProperties": false,
              "properties": {
                "prompt": {
                  "description": "Natural-language instruction of what to extract, e.g. 'the product name, price and rating'. Provide this and/or a schema.",
                  "type": "string"
                },
                "schema": {
                  "additionalProperties": {},
                  "description": "Optional JSON Schema object describing the exact shape of the data to return. When given, the output is constrained to it.",
                  "type": "object"
                },
                "url": {
                  "description": "Full http/https URL of the page to extract data from.",
                  "format": "uri",
                  "type": "string"
                }
              },
              "required": [
                "url"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "enum": [
                "http"
              ],
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "additionalProperties": false,
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "enum": [
                "json"
              ],
              "type": "string"
            }
          },
          "required": [
            "type",
            "example"
          ],
          "type": "object"
        }
      },
      "required": [
        "input",
        "output"
      ],
      "type": "object"
    }
  }
}

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

const res = await fetch("https://api.agishub.com/v1/extract-structured");
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://api.agishub.com/v1/extract-structured")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header