HALOWERK Nordic Land

Name: HALOWERK Nordic Land
Price: 0.001 USDC
Availability: InStock

Share of ESA WorldCover 2021 pixels classified as tree cover. The coordinate is validated against the Natural Earth boundary for Sweden; results outside it are rejected before payment.

OtherLiveeip155:8453Exactvia cdp

https://nordland.halowerk.com/v1/se-tree-cover-share

LandEuropeCountrySe

Calls · 30d

1→ 0%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 21 snapshots so far.

$11.47

Verified settled volume

2,654 settlements proven x402 by their on-chain EIP-3009 marker.

$0.0010

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-09-03 17:34Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.001USDC≈ $0.001 USD

on Base · exact scheme

Pay 0.001 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.

Paid to: 0x2880…C4E5E
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 1000 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "asset": "USDC",
      "version": "2",
      "eip712Domain": {
        "name": "USD Coin",
        "chainId": 8453,
        "version": "2",
        "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
      },
      "network_name": "Base Mainnet",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "latitude": 59.3293,
          "longitude": 18.0686
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "status": "ok",
          "caveats": [
            "Screening evidence only."
          ],
          "charged": true,
          "payment": {
            "settled": true,
            "price_usdc": 0.001
          },
          "service": "se-tree-cover-share",
          "sources": [
            {
              "id": "esa-worldcover-2021"
            }
          ],
          "category": "country",
          "evidence": {
            "tree-cover-share": {
              "name": "Tree-cover share",
              "unit": "percent",
              "value": 1,
              "method": "documented source raster sample",
              "metric": "tree-cover-share",
              "sample_count": 1
            }
          },
          "geometry": null,
          "service_id": "eli-0073",
          "generated_at": "2026-09-03T00:00:00.000Z"
        }
      }
    },
    "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": [
                "longitude",
                "latitude"
              ],
              "properties": {
                "latitude": {
                  "type": "number",
                  "maximum": 72.5,
                  "minimum": 34,
                  "description": "WGS84 latitude inside the published European coverage."
                },
                "longitude": {
                  "type": "number",
                  "maximum": 40.5,
                  "minimum": -31.5,
                  "description": "WGS84 longitude inside the published European coverage."
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "service_id",
                "service",
                "category",
                "status",
                "geometry",
                "evidence",
                "sources",
                "generated_at",
                "caveats",
                "charged",
                "payment"
              ],
              "properties": {
                "meta": {
                  "type": "object"
                },
                "status": {
                  "type": "string",
                  "const": "ok"
                },
                "caveats": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                },
                "charged": {
                  "type": "boolean"
                },
                "payment": {
                  "type": "object",
                  "required": [
                    "settled",
                    "price_usdc"
                  ],
                  "additionalProperties": true
                },
                "service": {
                  "type": "string",
                  "const": "se-tree-cover-share"
                },
                "sources": {
                  "type": "array",
                  "items": {
                    "type": "object"
                  },
                  "minItems": 1
                },
                "category": {
                  "type": "string",
                  "const": "country"
                },
                "evidence": {
                  "type": "object",
                  "required": [
                    "tree-cover-share"
                  ],
                  "properties": {
                    "tree-cover-share": {
                      "type": "object",
                      "required": [
                        "metric",
                        "name",
                        "unit",
                        "value",
                        "sample_count",
                        "method"
                      ],
                      "properties": {
                        "name": {
                          "type": "string"
                        },
                        "unit": {
                          "type": "string"
                        },
                        "value": {
                          "type": "number"
                        },
                        "method": {
                          "type": "string"
                        },
                        "metric": {
                          "type": "string"
                        },
                        "sample_count": {
                          "type": "integer",
                          "minimum": 1
                        }
                      },
                      "additionalProperties": true
                    }
                  },
                  "additionalProperties": false
                },
                "geometry": {
                  "type": [
                    "object",
                    "null"
                  ]
                },
                "service_id": {
                  "type": "string",
                  "const": "eli-0073"
                },
                "generated_at": {
                  "type": "string"
                }
              },
              "additionalProperties": false
            }
          }
        }
      }
    }
  },
  "payment-identifier": {
    "info": {
      "required": false
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "required"
      ],
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^[a-zA-Z0-9_-]+$",
          "maxLength": 128,
          "minLength": 16
        },
        "required": {
          "type": "boolean"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-09-03 17:34Z
Last indexed by Roundhouse: 2026-09-24 10:10Z
Last enriched (probe, favicon, geo): 2026-09-12 16:15Z
x402 version: 2
Max timeout: 300s
Liveness probe: HTTP 404

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 21 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service HALOWERK Nordic Land and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=HALOWERK%20Nordic%20Land'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://nordland.halowerk.com/v1/se-tree-cover-share, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.