80trust / 100
House Prices
by Factline in Developer tools
x402 APIPassing, checked 2 h ago
Use when the user asks what homes cost in a Dutch area: average home value (WOZ) in the neighbourhood with its trend, plus actual average sale prices per year in the municipality vs the national average. Context for an asking price, not a valuation of one home. Input: postcode or CBS buurt code. Source: CBS, Kadaster.
GET https://factline.dev/v1/house-prices
Last 30 days
All checks passedSome failedAll failedNot checked
- Uptime
- 100%
- Response time
- 60 ms typical, 60 ms slowest 5%
- Last check
- 2 h ago
- Next check
- any minute now
How to call it
# See the payment challenge (nothing is charged)
curl -i -X GET "https://factline.dev/v1/house-prices?postcode=2517AS"import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
const client = new x402Client().register(
"eip155:8453",
new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffactline.dev%2Fv1%2Fhouse-prices
const res = await pay("https://factline.dev/v1/house-prices?postcode=2517AS");
console.log(await res.json());Example input
{
"postcode": "2517AS"
}Example output
{
"municipality_sale_prices": {
"avg_sale_price_eur": 465418,
"change_5y_pct": 30.8,
"municipality_code": "GM0518",
"national_avg_sale_price_eur": 479527,
"year": 2025
},
"neighbourhood": {
"code": "BU05182245",
"municipality": "'s-Gravenhage",
"name": "Zeeheldenkwartier"
},
"neighbourhood_avg_home_value_eur": 403000,
"source": "CBS (WOZ values; sale prices 83625NED)"
}Security scan
- No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 2 h ago | Passed | 402 | 60 ms | $0.003 |
| 7 h ago | Passed | 402 | 85 ms | $0.003 |