Guides · API

Compare Dutch cars by plate API

Netherlands used-car comparison (kenteken vergelijken, RDW): 2 or 3 licence plates side by side with make, model, age, APK expiry, insurance, open recall, odometer verdict, import and taxi history, catalogue price, CO2 and power, the best per metric and red flags. For used-car buying, leasing and fleet agents.

0.004 USDC per call · GET /v1/vehicle/compare · free preview at /v1/vehicle/compare/preview

Parameters

Name	Required	Description
`plates`	yes	2 or 3 Dutch licence plates separated by ';', e.g. GT722F;G941RB

Example request

curl "https://factline.dev/v1/vehicle/compare?plates=GT722F%3BG941RB"
# 402 Payment Required: pay with an x402 client (USDC on Base), or send
# Authorization: Bearer <your Factline API key>

Example response

{
  "comparison": [
    {
      "plate": "GT722F",
      "make": "MAZDA",
      "model": "MAZDA CX-3",
      "first_registered": "2015-08-14",
      "age_years": 11,
      "apk_expiry": "2027-08-14",
      "apk_valid": true,
      "insured": true,
      "open_recall": false,
      "odometer_verdict": "consistent",
      "imported": false,
      "taxi": false,
      "catalogue_price_eur": 28135,
      "co2_g_per_km": 137,
      "power_kw": 88,
      "fuel": "petrol"
    },
    {
      "plate": "G941RB",
      "make": "VOLKSWAGEN",
      "model": "POLO",
      "first_registered": "2019-11-25",
      "age_years": 6,
      "apk_expiry": "2027-03-10",
      "apk_valid": true,
      "insured": true,
      "open_recall": false,
      "odometer_verdict": "consistent",
      "imported": false,
      "taxi": false,
      "catalogue_price_eur": 25699,
      "co2_g_per_km": 106,
      "power_kw": 70,
      "fuel": "petrol"
    }
  ],
  "best_by": [
    {
      "metric": "Newest",
      "best": "G941RB"
    },
    {
      "metric": "Lowest CO2",
      "best": "G941RB"
    },
    {
      "metric": "Most power",
      "best": "GT722F"
    }
  ],
  "flags": [],
  "source": "RDW Open Data"
}

Use it from an AI agent

Agents with an x402 wallet call the URL directly and pay per request. Assistants that speak MCP connect to https://factline.dev/mcp. Full reference: docs, OpenAPI, llms.txt. Businesses: API keys with a free trial.

Questions

How much does the Compare Dutch cars by plate cost?

0.004 USDC per call, paid per request with x402 (no account), or included in a Factline API key plan with a free trial. Calls that fail are not charged.

Can I try it for free?

Yes: GET /v1/vehicle/compare/preview with the same parameters validates your input and shows what the paid answer contains, at no cost.

Where does the data come from?

Official public registers and open data, named with their licence in every response (source field) and at /.well-known/x402-license-provenance.