ToolVet
72trust / 100

Trust Duplicate Charge Detector

by Duplicate Charge Detector in Security & trust

x402 APIPassing, checked 2 h ago

Detect duplicate charge fingerprints

POST
https://phion.systems/v1/paid/trust/duplicate-charge-detector
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
554 ms
810 ms slowest 5%
Last check
Passed
2 h ago, next in 3 h

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://phion.systems/v1/paid/trust/duplicate-charge-detector

Each call costs $0.003 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

The listing has no example input.

POST https://phion.systems/v1/paid/trust/duplicate-charge-detector
content-type: application/json

{}

Example response

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

{
  "assessment": {
    "confidence": 0.5,
    "risk_band": "review"
  },
  "receipt": {
    "signature": "base64url"
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://phion.systems/v1/paid/trust/duplicate-charge-detector' \
  -H 'content-type: application/json' \
  --data-raw '{}'

# 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://phion.systems/v1/paid/trust/duplicate-charge-detector' \
  -H 'content-type: application/json' \
  --data-raw '{}' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fphion.systems%2Fv1%2Fpaid%2Ftrust%2Fduplicate-charge-detector&method=POST
const res = await pay("https://phion.systems/v1/paid/trust/duplicate-charge-detector", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({}),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://phion.systems/v1/paid/trust/duplicate-charge-detector",
        json={},
    )
    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
2 h agoPassed402155 ms$0.003
15 h agoPassed402535 ms$0.003
26 h agoPassed402583 ms$0.003
38 h agoPassed402555 ms$0.003
2 days agoPassed402605 ms$0.003
Show 10 older checks
3 days agoPassed402653 ms$0.003
3 days agoPassed402655 ms$0.003
3 days agoPassed402543 ms$0.003
4 days agoPassed402621 ms$0.003
4 days agoPassed402606 ms$0.003
5 days agoPassed402536 ms$0.003
5 days agoPassed402709 ms$0.003
6 days agoPassed402143 ms$0.003
6 days agoPassed402977 ms$0.003
6 days agoPassed402600 ms$0.003