x402 census · sentinel.rootstuff.io · c63ac8645001 · JSON
POST /x402/ping
live
ICMP ping latency and packet loss
Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://sentinel.rootstuff.io/x402/ping |
| Method | POST |
| Price | $0.01 USDC = 10000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0x38287535a4f47f53360940cfad8bf9ac5bc04a69 |
| Seller | sentinel.rootstuff.io |
| Catalogs | cdp (row updated 2026-09-29) |
| Listed since (lower bound) | 2026-09-29 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-29 |
| CDP quality counters | 2 calls and 2 unique payers in 30 days, last call 2026-09-29 (catalog-reported, not verified on chain) |
| Category (keyword rule) | dev-tools/utilities |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | none |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
Latest re-probe
| Field | Value |
|---|---|
| Re-probed at | 2026-10-01T08:13:42.000Z (cron) |
| Verdict now | live changed from unprobed |
| HEAD / GET | 402 / 402 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"10000","payTo":"0x38287535a4f47f53360940cfad8bf9ac5bc04a69","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":null,"extra":null} |
| Live amount equals catalog price | yes |
| Latency | 1,363 ms |
| Error | none |
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 3 |
| Payments | 3 |
| USDC volume | $0.03 |
| Median payment | $0.01 |
| First / last payment | 2026-09-14 / 2026-09-30 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x38287535a4f47f53360940cfad8bf9ac5bc04a69 |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"host": "example.com"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example": {
"host": "example.com",
"latency_ms": 9,
"packet_loss_percent": 0,
"receipt": {
"algorithm": "ed25519",
"key_id": "…",
"receipt_id": "01J…",
"signature": "…"
},
"verdict": "reachable"
}
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://sentinel.rootstuff.io/x402/ping' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'
The catalog declares POST. 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/c63ac8645001/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"c63ac8645001"} 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 sentinel.rootstuff.io.