x402 census · api.atms.nathanlidurin.com · a513ba5cc4f5 · JSON
GET /x402/challenge
unprobed
ATMS x402 challenge — crawler / probe endpoint (always 402, no side effects)
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.atms.nathanlidurin.com/x402/challenge |
| Method | GET |
| Price | $0.001 USDC = 1000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0x6F748ce56A7b39008dcf42f427a2cbf849Ced320 |
| Seller | api.atms.nathanlidurin.com |
| Catalogs | cdp (row updated 2026-08-24) |
| Listed since (lower bound) | 2026-08-24 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-08-24 |
| CDP quality counters | 2 calls and 1 unique payers in 30 days, last call 2026-09-13 (catalog-reported, not verified on chain) |
| Category (keyword rule) | scrape/browser |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | ATMS Treasury · atms, treasury, x402 |
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 | 6 |
| Payments | 7 |
| USDC volume | $0.007 |
| Median payment | $0.001 |
| First / last payment | 2026-08-24 / 2026-09-23 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x6F748ce56A7b39008dcf42f427a2cbf849Ced320 |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {},
"type": "http"
},
"output": {
"type": "json",
"example": {
"data": {
"challenge": true,
"execute_url": "/x402/execute",
"service": "atms-api"
}
}
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://api.atms.nathanlidurin.com/x402/challenge' -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/a513ba5cc4f5/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"a513ba5cc4f5"} 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.atms.nathanlidurin.com.