x402 census · derivatives-pricer-production.up.railway.app · 6ac82fd79746 · JSON

POST /v1/volatility/surface

Verdict: not verified by an unpaid GET. 405/400: the 402 sits behind the declared method. This says nothing about whether the route works when called as declared.

Facts from the catalogs

Unpaid probe (census of 2026-10-22)

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)

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "dividendYield": 0,
   "options": [
    {
     "optionType": "call",
     "premium": 12.5,
     "strike": 90,
     "timeToExpiry": 0.25,
     "underlying": 100
    },
    {
     "optionType": "call",
     "premium": 8.7,
     "strike": 100,
     "timeToExpiry": 0.5,
     "underlying": 102
    },
    {
     "optionType": "put",
     "premium": 9.1,
     "strike": 110,
     "timeToExpiry": 1,
     "underlying": 101
    }
   ],
   "rate": 0.05
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 720
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://derivatives-pricer-production.up.railway.app/v1/volatility/surface' -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/6ac82fd79746/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"6ac82fd79746"} 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 derivatives-pricer-production.up.railway.app.