Factline

Name: Factline
Price: 0.015 USDC
Availability: InStock

Use when enriching a list of Dutch addresses (up to 10 per call, 0.0015 USDC each): official BAG address and coordinates, CBS neighbourhood, liveability percentile, crime per 1,000 residents vs national, average home value and optionally the energy label. Unfound addresses are flagged, not charged extra.

OtherLiveeip155:8453Exactvia cdp

https://factline.dev/v1/batch/addresses

NetherlandsEuropeBatchEnrichmentReal-estate

Calls · 30d

4→ 0%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 26 snapshots so far.

$2.11

Verified settled volume

203 settlements proven x402 by their on-chain EIP-3009 marker.

$0.015

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 2026-10-12 00:48Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0xb58dd178abac67f6d4894437a7fc725cbddb2075

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.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "docs": "/llms.txt",
  "error": "payment_required",
  "message": "This costs 0.015 USDC via x402. Payment details are in the PAYMENT-REQUIRED header.",
  "preview": "https://factline.dev/v1/batch/addresses/preview",
  "price_usdc": "0.015",
  "preview_hint": "Free: call the preview with the same query parameters to check your input and see what the paid answer contains before paying."
}

Accepts

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

0.015USDC≈ $0.015 USD

on Base · exact scheme

Pay 0.015 USDC on Base to 0xb58d…b2075. The signed payment is good for 2 minutes.

Paid to: 0xb58d…b2075
USD Coin contract: 0x8335…02913
Payment window: 2 minutes
As published: 15000 smallest units

15000units

on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: fyqifu…inMTK
Token contract: EPjFWd…TDt1v
Payment window: 2 minutes

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xb58dd178abac67f6d4894437a7fc725cbddb2075",
    "amount": "15000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
    },
    "payTo": "fyqifu7otDYanhqr84B9YzZfA5LwRTJ1uFLqDJinMTK",
    "amount": "15000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "addresses": "3511LX 1; 2517AS 100"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "count": 2,
          "found": 2,
          "source": "Kadaster BAG (PDOK), CBS, Politie, Leefbaarometer, RVO EP-Online",
          "explain": {
            "crime": "Police-registered crime per 1,000 residents in the CBS neighbourhood; busy centres score high because visitors are not residents.",
            "liveability": "Leefbaarometer percentile vs all Dutch areas (higher is better).",
            "postcode_avg_home_value": "Average WOZ value of homes in the 4-digit postcode area, CBS."
          },
          "results": [
            {
              "ok": true,
              "crime": {
                "year": 2025,
                "vs_national": 12.05,
                "per_1000_residents": 539.7,
                "national_per_1000_residents": 44.8
              },
              "input": "3511LX 1",
              "address": {
                "lat": 52.08962098,
                "lon": 5.11909785,
                "city": "Utrecht",
                "label": "Visschersplein 1, 3511LX Utrecht",
                "postcode": "3511LX",
                "province": "Utrecht",
                "house_number": 1,
                "municipality": "Utrecht",
                "bag_object_id": "0344010000001876"
              },
              "liveability": {
                "year": 2024,
                "social": 8,
                "physical": 23,
                "amenities": 99,
                "percentile": 89,
                "nuisance_safety": 3
              },
              "neighbourhood": {
                "code": "BU03440612",
                "name": "Lange Elisabethstraat, Mariaplaats en omgeving",
                "residents": 1790
              },
              "postcode_avg_home_value": {
                "year": 2023,
                "value": 537000
              }
            },
            {
              "ok": true,
              "crime": {
                "year": 2025,
                "vs_national": 1.38,
                "per_1000_residents": 62,
                "national_per_1000_residents": 44.8
              },
              "input": "2517AS 100",
              "address": {
                "lat": 52.08359668,
                "lon": 4.29193161,
                "city": "'s-Gravenhage",
                "label": "Laan van Meerdervoort 100, 2517AS 's-Gravenhage",
                "postcode": "2517AS",
                "province": "Zuid-Holland",
                "house_number": 100,
                "municipality": "'s-Gravenhage",
                "bag_object_id": "0518010001775699"
              },
              "liveability": {
                "year": 2024,
                "social": 2,
                "physical": 32,
                "amenities": 99,
                "percentile": 91,
                "nuisance_safety": 8
              },
              "neighbourhood": {
                "code": "BU05182245",
                "name": "Zeeheldenkwartier",
                "residents": 12920
              },
              "postcode_avg_home_value": {
                "year": 2023,
                "value": 513000
              }
            }
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "addresses"
              ],
              "properties": {
                "include": {
                  "type": "string",
                  "description": "Optional: 'energy_label' adds the registered energy label per address"
                },
                "addresses": {
                  "type": "string",
                  "description": "1 to 10 Dutch addresses separated by ';', each 'postcode house_number' or free text, e.g. '3511LX 1; 2517AS 100'"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  },
  "payment-identifier": {
    "info": {
      "required": false
    },
    "schema": {
      "type": "object",
      "$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: 2026-10-12 00:48Z
Last indexed by Roundhouse: 2026-10-26 15:00Z
Last enriched (probe, favicon, geo): 2026-10-08 04:16Z
x402 version: 2
Max timeout: 120s
Liveness probe: HTTP 402

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. 26 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 Factline 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=Factline'
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://factline.dev/v1/batch/addresses, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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