Daily transfers, volume and coverage →
x402-used-car-quickcheck-production.up.railway.app · x402-used-car-quickcheck-production.up.railway.app · Geo & Maps
Evaluate a used car before purchase. Compares the asking price with up to 50 current dealer listings in Canada or the U.S., matched by year, make, model, mileage and optional trim/location. Returns robust median and quartile pricing, deal rating, confidence, sample size and risk flags. Use for fast
| Network | Scheme | Amount | Asset |
|---|---|---|---|
| Base | exact | 0.01 | USDC |
| Solana | exact | 0.01 | USDC |
“exact” is the price per call. “upto” is a ceiling the client sets, not a price. Atomic amount 10000 = 0.01 USDC per call on Base. 2 payment options published.
endpoint
https://x402-used-car-quickcheck-production.up.railway.app/car-check
{
"method": "GET",
"queryParams": {
"country": "CA",
"make": "Tesla",
"mileage": 68000,
"model": "Model 3",
"price": 28000,
"state": "ON",
"trim": "Long Range",
"year": 2022
},
"type": "http"
}
{
"example": {
"asking_price": 28000,
"comparables": {
"analyzed_count": 39,
"market_total_matches": 116,
"outliers_removed": 3,
"raw_count": 42
},
"data_freshness": "live",
"market": {
"city": "Toronto",
"country": "CA",
"currency": "CAD",
"state": "ON"
},
"matching": {
"location_applied": true,
"trim_applied": true
},
"methodology": "Median and quartiles of mileage-matched active dealer asking prices with optional trim/location filters and IQR outlier filtering.",
"mileage_km": 68000,
"payment_network": "Base and Solana Mainnet",
"position": {
"confidence": "MEDIUM-HIGH",
"confidence_score": 70,
"difference_from_median": -4990,
"difference_percent": -15.13,
"estimated_savings_vs_median": 4990,
"rating": "EXCELLENT DEAL"
},
"pricing": {
"median": 32990,
"observed_max": 37995,
"observed_min": 28900,
"quartile_high": 34999,
"quartile_low": 29800
},
"risk_flags": [],
"service": "Used Car QuickCheck",
"vehicle": "2022 Tesla Model 3 Long Range",
"version": "3.0.0"
},
"type": "json"
}
Examples are the provider's own, not a call we made.
| Window | Observed | Transfers |
|---|---|---|
| Last complete day (2026-10-28) | $0.00 | 0 |
| Last 7 days | $0.00 | 0 |
| Last 30 days | $0.04 | 4 |
| Growth, 7d against the 7 before | not comparable | |
The observed inflow implies about 4 calls at list price; the source counted 3 (factor 1.33). A transfer is still not a purchase, but the order of magnitude holds — this is the strongest monetisation signal in the catalogue short of a receipt feed.
Peers with attributed inflows →37 of 7,995 services (0.5%) in Geo & Maps have attributable inflows; 5,319 have a source-measured call count. Median measured calls: 2.
Rank this category by observed inflows →Evaluate a used car before purchase. Compares the asking price with up to 50 current dealer listings in Canada or the U.S., matched by year, make, model, mileage and optional trim/location. Returns robust median and quartile pricing, deal rating, confidence, sample size and risk flags. Use for fast used-car price checks.
Quoted from x402 Bazaar · source record · read 2026-10-29
Observed transfers
· confidence medium
Token transfers reached this service's own payout address. A transfer is not a purchase, and shared, refunded or unrelated transfers cannot be excluded.
Why revenue is “unknown”. A revenue figure needs a receipt: an amount a buyer actually paid for this service. We hold none for this entry, and we hold no funds at all. What we have instead is $0.04 arriving at the payout address in 30 days — that is volume, and a lower bound: transfers can be refunds, treasury moves, or payments for something else entirely.
Cross-check. At the published price the observed inflow would cover about 4 calls; the source counted 3. Two independent measurements of the same question — they never match exactly, because the effective price differs per call size and the address can also receive unrelated transfers.
No daily history has been archived for this service yet. Open the full daily history →
A payment rail is where the provider asks to be paid. It is not proof that anything was paid through it. See evidence levels.
One row per statement. “Verified” means we checked it ourselves and the finding is quoted. “Provider claim” means we read it in the provider's own record. “Not found” is a statement about our search, not proof of absence.
| Statement | Status | What we found | Source | Checked |
|---|---|---|---|---|
| Endpoint | Provider claim |
https://x402-used-car-quickcheck-production.up.railway.app/car-check
EvidenceAls Resource-URL im Bazaar-Eintrag geführt. |
api.cdp.coinbase.com | 2026-10-29 |
| Input output | Provider claim |
Request/response examples published with the listing
EvidenceBeispiel-Ein- und -Ausgabe stammen aus dem Bazaar-Eintrag des Anbieters. |
api.cdp.coinbase.com | 2026-10-29 |
| Payment | Provider claim |
2 rails: Base, Solana · payee 0x735f74EdE4361788D6634925D592711463be8164
EvidenceAus den `accepts`-Einträgen: Netzwerk, Asset, Empfängeradresse und Betrag. Die Adresse ist die Grundlage der späteren On-Chain-Zuordnung; sie ist noch nicht durch eine eigene 402-Antwort bestätigt. |
api.cdp.coinbase.com | 2026-10-29 |
| Pricing | Provider claim |
0.01 USDC per call
EvidenceAtomic amount 10000 = 0.01 USDC per call on Base. 2 payment options published. Netzwerk: Base, Solana. |
api.cdp.coinbase.com | 2026-10-29 |
| Protocol | Provider claim |
x402 (HTTP 402 payment challenge)
EvidenceIm x402 Bazaar als zahlungspflichtige HTTP-Ressource gelistet (x402Version 2, Typ http). |
api.cdp.coinbase.com | 2026-10-29 |
| Provider | Provider claim |
x402-used-car-quickcheck-production.up.railway.app
EvidenceDie Ressource wird unter diesem Host im x402 Bazaar geführt; die Angaben stammen vom Anbieter. |
api.cdp.coinbase.com | 2026-10-29 |
| Usage | Verified |
3 calls / 3 unique payers in the last 30 days
EvidenceSource-reported usage from Coinbase x402 Bazaar, read on 2026-10-29. Letzter Aufruf laut Quelle: 2026-10-20T10:53:06.432Z. Aufrufe sind kein Umsatz. |
api.cdp.coinbase.com | 2026-10-29 |
We have not called this endpoint yet. Until we do, everything above is what the source published — no more.
Sorted by source-measured calls, not by our opinion. The right-hand figure is observed inflow, which stays empty for peers whose address is shared.
| With a measured call count | 5,319 (66.5 %) |
|---|---|
| With a published price | 5,608 (70.1 %) |
| With attributable inflows | 37 (0.5 %) |
| Observed inflows · 30d | $334.79 |
| Median measured calls | 2 |
| Median price per call | $0.01 |
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