x402 census · api.vextorium.com · f01d83e3352e · JSON

POST /revisar-firma-pago

unprobed

Explain an EIP-712 typed-data signature before signing it: x402/EIP-3009 payment authorizations, EIP-2612 permits, Permit2 and Seaport orders. Flags unlimited allowances, long validity and non-official tokens, and returns the exact hash to compare with your wallet.

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.vextorium.com/revisar-firma-pago

Method POST

Price $0.005 USDC = 5000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp

payTo 0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf

Seller api.vextorium.com

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 Vextorium · eip-712, signature, security, permit, 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 1

Payments 1

USDC volume $0.003

Median payment $0.003

First / last payment 2026-09-29 / 2026-09-29

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf (contract: CoinbaseSmartWallet)

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "datos_firma": {
    "domain": {
     "chainId": 8453,
     "name": "USD Coin",
     "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
     "version": "2"
    },
    "message": {
     "from": "0x1111111111111111111111111111111111111111",
     "nonce": "0xabababababababababababababababababababababababababababababababab",
     "to": "0x2222222222222222222222222222222222222222",
     "validAfter": "1790634093",
     "validBefore": "1790634453",
     "value": "10000"
    },
    "primaryType": "TransferWithAuthorization",
    "types": {
     "TransferWithAuthorization": [
      {
       "name": "from",
       "type": "address"
      },
      {
       "name": "to",
       "type": "address"
      },
      {
       "name": "value",
       "type": "uint256"
      },
      {
       "name": "validAfter",
       "type": "uint256"
      },
      {
       "name": "validBefore",
       "type": "uint256"
      },
      {
       "name": "nonce",
       "type": "bytes32"
      }
     ]
    }
   }
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 872
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://api.vextorium.com/revisar-firma-pago' -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/f01d83e3352e/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"f01d83e3352e"} 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.vextorium.com.