mirrored listing x402 eip155:8453

Dominant class transition measured from ESA WorldCover 2020 v100 and 2021 v200 for the sam

Dominant class transition measured from ESA WorldCover 2020 v100 and 2021 v200 for the same 250 metre analysis area. The result is observed map-class change, not a causal claim.

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1000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-03
updated

Provider

landvergleich.halowerk.com · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "latitude": 51.9,
          "longitude": 7.1
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "additionalProperties": false,
              "properties": {
                "latitude": {
                  "description": "WGS84 latitude inside the published European coverage.",
                  "maximum": 72.5,
                  "minimum": 34,
                  "type": "number"
                },
                "longitude": {
                  "description": "WGS84 longitude inside the published European coverage.",
                  "maximum": 40.5,
                  "minimum": -31.5,
                  "type": "number"
                }
              },
              "required": [
                "longitude",
                "latitude"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "payment-identifier": {
    "info": {
      "required": false
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "id": {
          "maxLength": 128,
          "minLength": 16,
          "pattern": "^[a-zA-Z0-9_-]+$",
          "type": "string"
        },
        "required": {
          "type": "boolean"
        }
      },
      "required": [
        "required"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://landvergleich.halowerk.com/v1/worldcover-2020-2021-class-transition"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://landvergleich.halowerk.com/v1/worldcover-2020-2021-class-transition");
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://landvergleich.halowerk.com/v1/worldcover-2020-2021-class-transition")
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/13907.json, and this resource appears in /discovery/resources and /discovery/search.