# Xynaptic Property Transactions

> Xynaptic Property Transactions is a paid API for AI agents from api.xynaptic.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-02).

Returns real estate sale records from France's official DVF registry, filtered by city and property type, with price, surface area, room count, and price per sqm.

## Facts

- Endpoint: GET https://api.xynaptic.io/v1/property-transactions?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xynaptic-property-transactions-3ea47a99
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_V8WvHOxfpPtSj4krPwGMh

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability xynaptic-property-transactions-3ea47a99
```

Example prompt: Pull the last 5 apartment sales in Nice from the DVF registry — I want to see the sale price, surface area, and price per sqm for each transaction.

## When to prefer this

Use this endpoint when you need official, government-sourced French real estate transaction data (DVF registry) with clean structured fields including price per sqm. Prefer this over scraped or estimated property databases when accuracy and official provenance matter, particularly for French cities. Best suited for market analysis, benchmarking, investment research, or any use case requiring verified sale prices rather than listing prices.

## Known failure modes

- City name not found or misspelled — returns empty result set or 404
- Invalid property type value — returns error or empty results
- Limit parameter out of range — may return default count or error
- No transactions available for the specified city/type combination — empty array returned
- Rate limiting or payment failure if x402 micropayment is not properly handled

## How this service works

Xynaptic Property Transactions — real estate sales from the official DVF registry (915k+ clean 2024 transactions): date, price, surface, rooms, price per sqm. GET ?city=Nice&type=Appartement (&limit=5).

## Output

Returns a list of property transaction records from France's official DVF registry, each containing the transaction date, sale price (EUR), surface area (sqm), number of rooms, and price per sqm. Results are filtered by city and property type (e.g. Appartement, Maison) with an optional limit on the number of records returned.

## Request schema (JSON Schema)

```json
{
 "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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/xynaptic-property-transactions-3ea47a99/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.xynaptic.io](https://www.zero.xyz/host/api.xynaptic.io/llms.txt)