# Xynaptic Property Compare

> Xynaptic Property Compare is a paid API for AI agents from api.xynaptic.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-02).

Compares two French communes side-by-side using official DVF data, returning median price per sqm, transaction volumes, and price dynamics for a given property type.

## Facts

- Endpoint: GET https://api.xynaptic.io/v1/property-compare?utm_source=zero.xyz
- Price: $0.05/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-compare-32ff803b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_k6pzLa3hNDujRtVUBeDQJ

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-compare-32ff803b
```

Example prompt: Compare the apartment market in Nice vs Marseille — I want to see median prices per sqm, how many transactions happened, and which city has been trending up more.

## When to prefer this

Choose this endpoint when you need a quick, official, side-by-side comparison of two specific French communes. It is purpose-built for city-vs-city benchmarking without needing to manually query and aggregate two separate lookups. Prefer it over the raw Xynaptic Property Transactions endpoint when you want pre-computed comparative statistics rather than raw transaction records.

## Known failure modes

- Unknown or misspelled commune name returns an error or empty result
- Property type not found in a given commune (e.g. very rural area with no apartment sales)
- DVF data may lag by several months — recent market shifts may not be reflected
- Rate limiting or payment failure at $0.05 per call via x402 protocol

## How this service works

Xynaptic Property Compare — two communes side by side from official DVF data: median prices per sqm, volumes, dynamics — where does your budget go further? GET ?a=Nice&b=Marseille&type=Appartement.

## Output

Returns a structured side-by-side comparison of two French communes including: median price per sqm for each, transaction volume for each, price dynamics/trends, and a summary of which commune offers better value — all sourced from the official DVF registry.

## 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-compare-32ff803b/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)