x402 census · api.duoleads.com · 78309ff297bb · JSON
GET /v1/geo/distance
unprobed
Distance and direction between WGS-84 coordinates: geodesic distance by Vincenty with a haversine fallback, initial and final bearing, the midpoint, and the destination point reached from a start point on a given bearing and distance. Also computes the cumulative length of a supplied coordinate path. Results in metres, kilometres, nautical miles and miles.
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.duoleads.com/v1/geo/distance |
| Method | GET |
| Price | $0.05 USDC = 50000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39 |
| Seller | api.duoleads.com |
| Catalogs | cdp (row updated 2026-09-28), payai (row updated 2026-09-29) |
| Listed since (lower bound) | 2026-09-28 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-29 |
| CDP quality counters | 1 calls and 1 unique payers in 30 days, last call 2026-09-28 (catalog-reported, not verified on chain) |
| Category (keyword rule) | other/unknown |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | Duo Data Utilities · deterministic, no-api-key, geo, geodesy, distance |
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 | 1 |
| Payments | 50 |
| USDC volume | $2.50 |
| Median payment | n/a |
| First / last payment | 2026-09-29 / 2026-09-29 |
| Sampler-shaped share of payments | n/a |
| Payers that are not samplers | n/a |
| Source | blockscout-sample — newest page of inbound ERC-20 transfers only (<=50); counts are a floor, not a total |
| Address | 0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39 |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {
"lat1": "52.3728",
"lat2": "40.7128",
"lon1": "4.8936",
"lon2": "-74.0060"
},
"type": "http"
},
"output": {
"type": "json",
"example_truncated": true,
"chars": 771
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://api.duoleads.com/v1/geo/distance' -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/78309ff297bb/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"78309ff297bb"} 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 · agentic.market (CDP Bazaar front end) · this record as JSON · all resources on api.duoleads.com.