ToolVet
71trust / 100

Trust Concurrency Guard

by Concurrency Guard in Security & trust

x402 APIPassing, checked 10 h ago

Enforce concurrent slot limits

POST
https://phion.systems/v1/paid/trust/concurrency-guard
Price
$0.002
per call in USDC
Uptime
98.1%
last 30 days
Response time
609 ms
902 ms slowest 5%
Last check
Passed
10 h ago, next any minute now

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/concurrency-guard

Each call costs $0.002 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/concurrency-guard
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 $0.002.

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/concurrency-guard' \
  -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/concurrency-guard' \
  -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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fphion.systems%2Fv1%2Fpaid%2Ftrust%2Fconcurrency-guard&method=POST
const res = await pay("https://phion.systems/v1/paid/trust/concurrency-guard", {
  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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
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/concurrency-guard",
        json={},
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
10 h agoPassed402689 ms$0.002
22 h agoPassed402606 ms$0.002
34 h agoPassed402785 ms$0.002
46 h agoPassed402143 ms$0.002
2 days agoPassed402138 ms$0.002
Show 10 older checks
3 days agoPassed402547 ms$0.002
3 days agoTimed out---
4 days agoPassed402541 ms$0.002
4 days agoPassed402152 ms$0.002
5 days agoPassed402640 ms$0.002
5 days agoPassed402604 ms$0.002
5 days agoPassed402609 ms$0.002
6 days agoPassed402628 ms$0.002
6 days agoPassed402533 ms$0.002
7 days agoPassed402651 ms$0.002