x402 census · x402-datashop-production.up.railway.app · 0d06974565be · JSON

GET /v1/air/quality

live

Hourly air-quality data (PM2.5, PM10, ozone, NO2, European/US AQI) for any lat/lon, from the Copernicus CAMS model served by Open-Meteo (CC-BY 4.0), updated hourly. Query: ?latitude=48.8566&longitude=2.3522&hourly=pm2_5,pm10,european_aqi&forecast_days=2 (1..7 days). Returns parallel time/value arrays with units; cached 1h.

Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.

Facts from the catalogs

Field Value

URL https://x402-datashop-production.up.railway.app/v1/air/quality

Method GET

Price $0.002 USDC = 2000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x6ab8efe305cce67daa48c97bde29c04402822dff

Seller x402-datashop-production.up.railway.app

Catalogs cdp (row updated 2026-10-08)

Listed since (lower bound) 2026-10-08 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-10-08

CDP quality counters 3 calls and 3 unique payers in 30 days, last call 2026-10-08 (catalog-reported, not verified on chain)

Category (keyword rule) trading-signals

Templated path no

x402Version in catalog 2

Service name / tags eu-verify · air-quality, pollution, pm25, aqi, health

Unpaid probe (census of 2026-10-22)

Field Value

Probed at 2026-10-22T00:31:55.852Z

HEAD 404

GET 402

Verdict live live: valid 402 to an unpaid GET

402 carried in header

x402Version in the 402 2

accepts[0] {"scheme":"exact","network":"eip155:8453","amount":"2000","payTo":"0x6ab8efe305cce67daa48c97bde29c04402822dff","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Live payTo equals catalog payTo yes

extensions.bazaar in the 402 yes

PAYMENT-REQUIRED header yes

WWW-Authenticate offer none

Content type / server / CORS application/json / railway-hikari / none

Latency 97 ms

Error Payment required

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

Field Value

Distinct payers 27

Payments 79

USDC volume $0.36

Median payment $0.005

First / last payment 2026-07-16 / 2026-09-30

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x6ab8efe305cce67daa48c97bde29c04402822dff (contract: EIP7702Proxy)

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "forecast_days": 2,
   "hourly": "pm2_5,pm10,european_aqi",
   "latitude": 48.8566,
   "longitude": 2.3522
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "forecast_days": 1,
   "hourly": {
    "european_aqi": [
     22,
     21
    ],
    "pm10": [
     12.4,
     11.8
    ],
    "pm2_5": [
     8.2,
     7.9
    ],
    "time": [
     "2026-07-13T00:00",
     "2026-07-13T01:00"
    ]
   },
   "hourly_units": {
    "european_aqi": "EAQI",
    "pm10": "μg/m³",
    "pm2_5": "μg/m³",
    "time": "iso8601"
   },
   "latitude": 48.9,
   "longitude": 2.4,
   "source": "CAMS (Copernicus) via Open-Meteo, CC-BY 4.0 attribution required (open-meteo.com)"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://x402-datashop-production.up.railway.app/v1/air/quality' -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/0d06974565be/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"0d06974565be"} 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 x402-datashop-production.up.railway.app.