ToolVet
75trust / 100

Scan Outgoing

by paysafe-agent.com in Security & trust

x402 APIPassing, checked 41 min ago

Payment security firewall scan for an OUTGOING x402 payment: PII/secret leak detection in payment metadata, nonce replay detection, overpayment detection, prompt-injection-triggered payment analysis (fast + deep tiers), canonical-USDC asset verification, merchant pinning, velocity/spend caps, and counterparty reputation cross-check. Returns allow/flag/block with per-check reasons and an Ed25519-signed verdict. Advisory and non-custodial.

POST https://paysafe-agent.com/v1/scan/outgoing

Last 30 days

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

Uptime
100%
Response time
304 ms typical, 630 ms slowest 5%
Last check
41 min ago
Next check
any minute now

How to call it

POST https://paysafe-agent.com/v1/scan/outgoing

Each call costs $0.01 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://paysafe-agent.com/v1/scan/outgoing
content-type: application/json

{
  "context": {
    "origin": "planning"
  },
  "expected_price_usd": 0.05,
  "payment": {
    "amount": "50000",
    "asset_decimals": 6,
    "description": "Premium data access",
    "network": "eip155:8453",
    "nonce": "0x1a2b3c",
    "pay_to": "0x209693Bc6afc0C5328bA36FaF03C514EF312287C",
    "resource_url": "https://api.example.com/premium",
    "scheme": "exact"
  }
}

Parameters

ParameterTypeRequiredDescription
agent_idstringNoIdentifier of the scanning agent (labels the scan; velocity and history are scoped to your API key's account, and to agent_id only for anonymous scans)
contextobjectNoProvenance: origin (planning|user_instruction|tool_result|fetched_content|unknown), content (the content the agent just read), content_source_url
expected_price_usdnumberNoWhat the agent expected this to cost (USD)
paymentobjectYesThe x402 payment (or payment request) to screen: scheme, network, amount (atomic) or amount_usd, asset, pay_to, payer, resource_url, description, reason, nonce, metadata. Must carry pay_to or amount / amount_usd; a payment with neither is rejected with 400 and not scanned.
policyobjectNoTiering overrides: force_deep / skip_deep for the deep content-analysis tier

Example response

The provider's example. We can't check it without paying.

{
  "advisory": "Recommended action: DO NOT settle this payment. …",
  "attestation": {
    "alg": "ed25519",
    "message": "6f9c9d5e-…|outgoing|block|95|2026-07-14T09:01:00Z",
    "signature_hex": "…"
  },
  "checks": [
    {
      "id": "replay.nonce_reuse",
      "reason": "Nonce reuse detected: first seen 2026-07-14T09:00:00Z …",
      "severity": "critical",
      "verdict": "block"
    }
  ],
  "direction": "outgoing",
  "risk_score": 95,
  "scan_id": "6f9c9d5e-…",
  "scanned_at": "2026-07-14T09:01:00Z",
  "verdict": "block"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://paysafe-agent.com/v1/scan/outgoing' \
  -H 'content-type: application/json' \
  --data-raw '{"context":{"origin":"planning"},"expected_price_usd":0.05,"payment":{"amount":"50000","asset_decimals":6,"description":"Premium data access","network":"eip155:8453","nonce":"0x1a2b3c","pay_to":"0x209693Bc6afc0C5328bA36FaF03C514EF312287C","resource_url":"https://api.example.com/premium","scheme":"exact"}}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://paysafe-agent.com/v1/scan/outgoing' \
  -H 'content-type: application/json' \
  --data-raw '{"context":{"origin":"planning"},"expected_price_usd":0.05,"payment":{"amount":"50000","asset_decimals":6,"description":"Premium data access","network":"eip155:8453","nonce":"0x1a2b3c","pay_to":"0x209693Bc6afc0C5328bA36FaF03C514EF312287C","resource_url":"https://api.example.com/premium","scheme":"exact"}}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fpaysafe-agent.com%2Fv1%2Fscan%2Foutgoing&method=POST
const res = await pay("https://paysafe-agent.com/v1/scan/outgoing", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "context": {
      "origin": "planning"
    },
    "expected_price_usd": 0.05,
    "payment": {
      "amount": "50000",
      "asset_decimals": 6,
      "description": "Premium data access",
      "network": "eip155:8453",
      "nonce": "0x1a2b3c",
      "pay_to": "0x209693Bc6afc0C5328bA36FaF03C514EF312287C",
      "resource_url": "https://api.example.com/premium",
      "scheme": "exact"
    }
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://paysafe-agent.com/v1/scan/outgoing",
        json={
            "context": {
                "origin": "planning",
            },
            "expected_price_usd": 0.05,
            "payment": {
                "amount": "50000",
                "asset_decimals": 6,
                "description": "Premium data access",
                "network": "eip155:8453",
                "nonce": "0x1a2b3c",
                "pay_to": "0x209693Bc6afc0C5328bA36FaF03C514EF312287C",
                "resource_url": "https://api.example.com/premium",
                "scheme": "exact",
            },
        },
    )
    print(res.status_code, res.text)

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
41 min agoPassed402725 ms$0.01
5 h agoPassed402342 ms$0.01
9 h agoPassed402274 ms$0.01
13 h agoPassed402293 ms$0.01
17 h agoPassed402227 ms$0.01
21 h agoPassed402304 ms$0.01
24 h agoPassed402630 ms$0.01
29 h agoPassed402315 ms$0.01