Vextorium x402 Endpoint Inspector

x402

Vextorium x402 Endpoint Inspector is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-10).

Inspects any x402 payment-gated endpoint before paying, returning pricing, asset details, payee address risk, authorization timeout, Bazaar metadata, and a clear risk verdict.

Price / call$0.004

Seller volume →—

Success—

StatusUnknown

How this service works

Check any x402 endpoint before paying, without paying: price in USD per network, asset (flags anything that is not official USDC), pay-to address and whether it is a contract, authorization timeout, Bazaar metadata, and risk alerts with a clear verdict.

Output

Returns a structured JSON object with: the inspected URL, is_x402 boolean, x402 protocol version, response content type, verdict string (e.g. 'ok' or a risk label), an array of risk alerts with severity levels and messages, a list of payment_options each containing network name, USD price, asset address, official USDC flag, pay-to address, contract flag, unit amount, and max authorization time in seconds, plus a Bazaar profile flag and a note reminding the caller to verify the payee address independently.

Example use cases

Safe payment check before agent call

“My AI agent is about to pay and call https://api.someservice.com/generate — can you inspect that x402 endpoint first and tell me the USD price, whether the USDC is official, if the recipient is a contract, and give me a risk verdict before any money moves?”

Auditing unknown x402 API for suspicious address

“I found this x402 endpoint at https://thirdparty.io/api/data and I'm not sure I trust it — can you check the pay-to address, see if it's a smart contract, flag any alerts, and tell me if the asset is real USDC on all supported networks?”

Comparing x402 pricing across networks

“What does the x402 endpoint at https://api.vextorium.com/validar-iban-pago actually cost on each supported network, and is the payment going to a contract or a regular wallet? Give me the full breakdown without paying.”

Technical details

Endpoint

POSThttps://api.vextorium.com/v1/x402-inspect?utm_source=zero.xyz

When to prefer

Use this endpoint whenever an AI agent or user needs to evaluate an x402-gated API before committing payment — especially to detect non-standard assets, smart contract payees, unusual authorization timeouts, or missing Bazaar profiles. Prefer this over blindly calling and paying x402 endpoints, particularly for unfamiliar or third-party APIs. It is the right choice when the primary concern is pre-payment risk assessment rather than actually invoking the underlying service.

Side effects

Target URL is not an x402 endpoint (is_x402: false, no payment_options returned)
Target URL is unreachable or times out (network error response)
Asset is non-standard or non-USDC token (flagged in alerts, asset_is_official_usdc: false)
Pay-to address is a smart contract without clear explanation (alert level warning or error)
Bazaar profile absent for unknown endpoint (bazaar_profile: false, may increase risk)
Malformed URL input causes validation error before inspection

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "url": "https://api.vextorium.com/validar-iban-pago",
    "note": "Inspection without paying. Always check that the payee address is the one you expect.",
    "alerts": [
      {
        "level": "info",
        "message": "On Base the recipient is a contract, not a regular wallet."
      }
    ],
    "is_x402": true,
    "verdict": "ok",
    "description": "IBAN validation (ISO 13616 mod-97 and per-country length, SEPA membership; for Spain also the national CCC check digits and bank name). Computed locally, IBA...",
    "version_x402": 2,
    "response_type": "application/json",
    "bazaar_profile": true,
    "payment_options": [
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "pay_to": "HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2",
        "schema": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "price_usd": 0.003,
        "network_name": "Solana",
        "units_amount": "3000",
        "max_time_seconds": 300,
        "pay_to_is_contract": null,
        "asset_is_official_usdc": true
      },
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "pay_to": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
        "schema": "exact",
        "network": "eip155:8453",
        "price_usd": 0.003,
        "network_name": "Base",
        "units_amount": "3000",
        "max_time_seconds": 300,
        "pay_to_is_contract": true,
        "asset_is_official_usdc": true
      }
    ]
  }
}

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