Index onlineMerchant portal
Api Endpoint

Factline

Use when a tenant asks if their Dutch rent is too high or what the maximum rent is: estimated rent points (WWS) from floor area, energy label and neighbourhood WOZ, the likely segment (social up to 143 points, middle 144-186, free 187+) and the approximate maximum basic rent (2026 limits). An estimate with a link to the official check. Input: postcode + house number.

Open interactive test console

Offering

Provider
factline.dev
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Legal And Compliance
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://factline.dev/v1/rent-check
MIME type
application/json
First seen
2026-10-16T01:50:32.458Z
Last seen
Tags
netherlands, europe, rent, rental, tenant, real-estate, housing

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xb58dd178abac67f6d4894437a7fc725cbddb2075"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "payTo": "fyqifu7otDYanhqr84B9YzZfA5LwRTJ1uFLqDJinMTK"
  }
]

Observed health

Status
Healthy
Latest latency
316 ms
Average latency
556 ms
HTTP status
402
Last checked
Reachability
100% over 12 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "postcode": {
          "type": "string",
          "description": "Dutch postcode, 4 digits + 2 letters, e.g. 3511LX",
          "pattern": "^[1-9][0-9]{3} ?[A-Za-z]{2}$"
        },
        "house_number": {
          "type": "integer",
          "description": "House number, e.g. 1",
          "minimum": 1
        },
        "house_letter": {
          "type": "string",
          "description": "Optional house letter, e.g. A"
        },
        "addition": {
          "type": "string",
          "description": "Optional house number addition, e.g. 2 or BIS"
        },
        "q": {
          "type": "string",
          "description": "Alternative to postcode: free-text address, e.g. 'Visschersplein 1 Utrecht'"
        }
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "addition": {
              "description": "Optional house number addition, e.g. 2 or BIS",
              "type": "string"
            },
            "house_letter": {
              "description": "Optional house letter, e.g. A",
              "type": "string"
            },
            "house_number": {
              "description": "House number, e.g. 1",
              "minimum": 1,
              "type": "integer"
            },
            "postcode": {
              "description": "Dutch postcode, 4 digits + 2 letters, e.g. 3511LX",
              "pattern": "^[1-9][0-9]{3} ?[A-Za-z]{2}$",
              "type": "string"
            },
            "q": {
              "description": "Alternative to postcode: free-text address, e.g. 'Visschersplein 1 Utrecht'",
              "type": "string"
            }
          },
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}