x402 census · payai.agentstools.dev · c801d8acb911 · JSON
GET /quant/montecarlo
live
Monte-Carlo geometric-Brownian-motion simulation of terminal price and European option payoff, with percentiles and a standard error. Pure computation over your inputs.
Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-03). The live amount equals the catalog price.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://payai.agentstools.dev/quant/montecarlo |
| Method | GET |
| Price | $0.005 USDC = 5000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v |
| Network | solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp (solana) |
| payTo | AytHnvc6bZx1ALTy7b5Px7hcavoSYszG9aeKvDcZ8R1u |
| Seller | payai.agentstools.dev |
| Catalogs | payai (row updated 2026-09-30) |
| Listed since (lower bound) | 2026-09-30 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-30 |
| CDP quality counters | not in the CDP catalog |
| Category (keyword rule) | crypto-data |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | quant-montecarlo · quant, monte-carlo, gbm, simulation, options |
Unpaid probe (census of 2026-09-30)
| Field | Value |
|---|---|
| Probed at | 2026-09-30T23:45:29.259Z |
| HEAD | 402 |
| GET | 402 |
| Verdict | live live: valid 402 to an unpaid GET |
| 402 carried in | header+body |
| x402Version in the 402 | 2 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"5000","payTo":"0xF22e558a00D91Ee12A1F50C52186FecB8dDFf493","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}} |
| Live amount equals catalog price | yes |
| Live payTo equals catalog payTo | no |
| extensions.bazaar in the 402 | yes |
| PAYMENT-REQUIRED header | yes |
| WWW-Authenticate offer | none |
| Content type / server / CORS | application/json / uvicorn / none |
| Latency | 1,979 ms |
| Error | Payment required |
Latest re-probe
| Field | Value |
|---|---|
| Re-probed at | 2026-10-03T06:13:27.000Z (cron) |
| Verdict now | live unchanged |
| HEAD / GET | 402 / 402 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"5000","payTo":"0xF22e558a00D91Ee12A1F50C52186FecB8dDFf493","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}} |
| Live amount equals catalog price | yes |
| Latency | 1,699 ms |
| Error | none |
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Settlement history | unresolved: non-EVM payTo; only Base is covered |
Declared input and output (extensions.bazaar)
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"K": 100,
"S": 100,
"T": 1,
"r": 0.05,
"seed": 42,
"type": "call",
"paths": 20000,
"sigma": 0.2,
"steps": 1
}
},
"output": {
"type": "json",
"example": {
"paths": 20000,
"steps": 1,
"option": {
"type": "call",
"price": 10.46,
"strike": 100,
"prob_itm": 0.54,
"standard_error": 0.1
},
"terminal": {
"max": 250,
"min": 40.1,
"p05": 74.9,
"p50": 103,
"p95": 143.8,
"std": 21.2,
"mean": 105.1
},
"disclaimer": "computation only, not financial advice"
}
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://payai.agentstools.dev/quant/montecarlo' -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/c801d8acb911/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"c801d8acb911"} 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 · this record as JSON · all resources on payai.agentstools.dev.