x402 census · api.xynaptic.io · 64b8a538c9c7 · JSON
GET /v1/property-transactions
live
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).
Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://api.xynaptic.io/v1/property-transactions |
| Method | GET |
| Price | $0.02 USDC = 20000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts solana, eip155:137 |
| payTo | 0x4ff893dF9aB8603d5460FbbAeE0D9B8c0fa4D5e9 |
| Seller | api.xynaptic.io |
| Catalogs | cdp (row updated 2026-09-26) |
| Listed since (lower bound) | 2026-09-26 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-26 |
| CDP quality counters | 1 calls and 1 unique payers in 30 days, last call 2026-09-26 (catalog-reported, not verified on chain) |
| Category (keyword rule) | crypto-data |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | none |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
Latest re-probe
| Field | Value |
|---|---|
| Re-probed at | 2026-10-01T18:13:42.000Z (cron) |
| Verdict now | live changed from unprobed |
| HEAD / GET | 402 / 402 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"20000","payTo":"0x4ff893dF9aB8603d5460FbbAeE0D9B8c0fa4D5e9","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":60,"extra":{"name":"USD Coin","version":"2"}} |
| Live amount equals catalog price | yes |
| Latency | 97 ms |
| Error | none |
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 2 |
| Payments | 7 |
| USDC volume | $0.17 |
| Median payment | $0.03 |
| First / last payment | 2026-09-28 / 2026-09-30 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x4ff893dF9aB8603d5460FbbAeE0D9B8c0fa4D5e9 |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {},
"type": "http"
},
"output": {
"type": "json",
"example": {
"city": "Lyon",
"service": "property-transactions",
"summary": "5 sales returned.",
"transactions": [
{
"date": "2024-12-30",
"prix": 560000,
"surface": 73
}
]
}
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://api.xynaptic.io/v1/property-transactions' -H 'accept: application/json'
The catalog declares GET. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.
Paid checks (x402, USDC on Base)
GET https://bazaar.agentexchange.work/r/64b8a538c9c7/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"64b8a538c9c7"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.
Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on api.xynaptic.io.