x402 census · quartermaster.surewhynot.app · 1afdf8cfe8b7 · JSON
GET /v1/x402/simulate
unprobed
Pre-flight an x402 payment: decode the endpoint's challenge, report the cost on every rail (Base and Solana) and the cheapest, and — with a payer address — verify the wallet can afford the call on Base.
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://quartermaster.surewhynot.app/v1/x402/simulate |
| Method | GET |
| Price | $0.003 USDC = 3000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| payTo | 0x5253666c40432f009ebd99908b9cd2a7fd1019cb |
| Seller | quartermaster.surewhynot.app |
| Catalogs | cdp (row updated 2026-09-18) |
| Listed since (lower bound) | 2026-09-18 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-18 |
| CDP quality counters | 1 calls and 1 unique payers in 30 days, last call 2026-09-18 (catalog-reported, not verified on chain) |
| Category (keyword rule) | weather/geo/maps |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | · x402, 402, payments, preflight, simulate |
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 | 20 |
| Payments | 43 |
| USDC volume | $0.19 |
| Median payment | $0.005 |
| First / last payment | 2026-07-13 / 2026-09-30 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x5253666c40432f009ebd99908b9cd2a7fd1019cb (contract: EIP7702Proxy) |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {
"address": "0xc2a36e22ecbf353086cf83e7beea78bc28a64083",
"url": "https://api.example.com/paid-endpoint"
},
"type": "http"
},
"output": {
"type": "json",
"example_truncated": true,
"chars": 604
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://quartermaster.surewhynot.app/v1/x402/simulate' -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/1afdf8cfe8b7/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"1afdf8cfe8b7"} 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 quartermaster.surewhynot.app.