x402 census · api.truthbear.co · 6dfee6640840 · JSON
GET /gauge/air
unprobed
Add-on, air quality for one location: US AQI category and PM2.5 reading from EPA and CAMS official feeds. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. Every record carries an offline-recomputable record_hash. $0.0050 per call.
Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://api.truthbear.co/gauge/air |
| Method | GET |
| Price | $0.005 USDC = 5000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| payTo | 0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3 |
| Seller | api.truthbear.co |
| Catalogs | cdp (row updated 2026-09-07) |
| Listed since (lower bound) | 2026-09-07 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-07 |
| CDP quality counters | 2 calls and 2 unique payers in 30 days, last call 2026-09-07 (catalog-reported, not verified on chain) |
| Category (keyword rule) | trading-signals |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | Truth Bear · gauge, air, no-data-no-charge, official-source, record-hash |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
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 | 2 |
| Payments | 2 |
| USDC volume | $0.12 |
| Median payment | $0.06 |
| First / last payment | 2026-09-01 / 2026-09-11 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3 (contract) |
Declared input and output (extensions.bazaar)
{
"input": {
"example": {
"loc": "us-stlouis"
},
"exampleRequest": "/gauge/air?loc=us-stlouis",
"method": "GET",
"queryParams": {
"loc": "required - location id; full list at free /gauge/preview"
},
"type": "http"
},
"output": {
"type": "json"
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://api.truthbear.co/gauge/air' -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/6dfee6640840/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"6dfee6640840"} 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.truthbear.co.