x402 census · saylorinnovations.com · 7acaadd55b71 · JSON
GET /api/radon/potential
gone
Radon Potential at a Location (USGS/EPA). Radon potential at any U.S. address or coordinates (USGS geologic radon map, via EPA): low, moderate or high radon potential with the radon index, expected indoor screening range in pCi/L, the geologic province and rock description, plus EPA action-level guidance. For home buying and radon testing decisions.
Verdict: dead listing. 404/410: gone.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://saylorinnovations.com/api/radon/potential |
| Method | GET |
| Price | $0.002 USDC = 2000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v |
| Network | solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp (solana) |
| payTo | 7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7 |
| Seller | saylorinnovations.com |
| Catalogs | payai (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 | not in the CDP catalog |
| Category (keyword rule) | weather/geo/maps |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | · radon, potential, environment, usa |
Unpaid probe (census of 2026-09-30)
| Field | Value |
|---|---|
| Probed at | 2026-09-30T23:51:09.714Z |
| HEAD | 404 |
| GET | 404 |
| Verdict | gone 404/410: gone |
| 402 carried in | n/a |
| x402Version in the 402 | n/a |
| accepts[0] | none |
| Live amount equals catalog price | not comparable |
| Live payTo equals catalog payTo | not comparable |
| extensions.bazaar in the 402 | no |
| PAYMENT-REQUIRED header | no |
| WWW-Authenticate offer | none |
| Content type / server / CORS | text/html / cloudflare / none |
| Latency | 1,504 ms |
| Error | none |
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 |
|---|---|
| Settlement history | unresolved: non-EVM payTo; only Base is covered |
Declared input and output (extensions.bazaar)
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"lat": "39.74",
"lon": "-105.0"
}
},
"output": {
"type": "json",
"example": {
"lat": 39.74,
"lon": -105,
"found": true,
"state": "CO",
"radon_index": 12,
"radon_potential": "high",
"geologic_province": "High Plains",
"predicted_average_indoor_screening_level": "above 4 pCi/L"
}
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://saylorinnovations.com/api/radon/potential' -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/7acaadd55b71/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"7acaadd55b71"} 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: PayAI listing status · this record as JSON · all resources on saylorinnovations.com.