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x402-farm Valeurs Foncières (French Property Transactions)
x402
x402-farm Valeurs Foncières (French Property Transactions) is a paid API for AI agents from x402-farm.vercel.app, paid per call via x402, $0.02/call, status down (last checked 2026-09-15).
Returns real estate transaction records (mutations foncières) for a French commune by INSEE code, including sale dates, built surface areas, and property values.
Price / call$0.02
Success—
StatusDown
How this service works
Pay-per-call APIs for AI agents — x402 protocol, USDC on Base, no account needed.
Output
A JSON object containing the INSEE code queried, total number of property mutations found, and an array of individual mutation records each with a sale date, built surface area in square meters, and property value in euros.
Example use cases
French neighborhood property market research
“I'm considering buying an apartment in the 10th arrondissement of Paris. Can you look up recent property transactions there — INSEE code 75110 — and show me what properties have been selling for and how big they are?”
Real estate investment analysis by commune
“I need property transaction data for Lyon 3rd arrondissement, INSEE code 69383 — specifically the sale dates, property values, and built surface areas from recent mutations so I can assess the market.”
Automated French real estate report
“Pull all the valeurs foncières mutation records for Bordeaux centre, INSEE code 33063, and summarize the total number of sales and typical property values so I can include it in a market report.”
Technical details
Endpoint
GEThttps://x402-farm.vercel.app/v1/fr/valeurs-foncieresWhen to prefer
Choose this endpoint when you need structured French real estate transaction (DVF) data by INSEE commune code without needing to set up an account or API key — ideal for agents that need to pay per call in USDC via the x402 protocol and want government-sourced property valuation data for French municipalities.
Side effects
- Invalid or non-existent INSEE code returns empty or error response
- Payment failure via x402 protocol blocks the request
- No mutations found for a commune with no recorded sales
- Rate limiting or server unavailability returns HTTP 5xx
- Malformed query parameters result in 400 Bad Request
Output
Schema · Response
{
"type": "json",
"example": {
"insee": "75101",
"total": 478,
"mutations": [
{
"date": "2023-06-01",
"surface_bati_m2": 22,
"valeur_fonciere": 258000
}
]
}
}Tags
x402
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