ToolVet
75trust / 100

Preflight

by Plainsight in Onchain & crypto

x402 APIPassing, checked 1 h ago

x402 Payment Preflight: before paying, is this route (or the whole shop) actually payable — listed, priced, backed by a funded payTo USDC wallet (live balance read), and settling (30-day gap)? Call with ?route=<path> for one route, or bare to check the whole shop.

GET
https://shop.netlobo.com/preflight/x402
Price
$0.02
per call in USDC
Uptime
100%
last 30 days
Response time
764 ms
1.0 s slowest 5%
Last check
Passed
1 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

GET https://shop.netlobo.com/preflight/x402

Each call costs $0.02 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.

GET https://shop.netlobo.com/preflight/x402?route=%2Fv1%2Fgas

Parameters

ParameterTypeRequiredDescription
routestringYesone route path to check (e.g. /v1/gas); optional — a bare call checks the whole shop

Example response

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

{
  "checked_at": "2026-10-05T00:00:00Z",
  "network": "eip155:8453",
  "pay_to": "0x…",
  "routes": [
    {
      "gap_30d": 35,
      "in_catalog": true,
      "knocks_30d": 40,
      "price_usd": "$0.01",
      "priced": true,
      "route": "/v1/gas",
      "settlements_30d": 5
    }
  ],
  "status": "pass",
  "usdc_asset": "0x…",
  "usdc_balance_usd": 12.34,
  "wallet_ok": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.02.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://shop.netlobo.com/preflight/x402?route=%2Fv1%2Fgas'

# 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 - 'https://shop.netlobo.com/preflight/x402?route=%2Fv1%2Fgas' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fshop.netlobo.com%2Fpreflight%2Fx402
const res = await pay("https://shop.netlobo.com/preflight/x402?route=%2Fv1%2Fgas");
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://shop.netlobo.com/preflight/x402?route=%2Fv1%2Fgas")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
1 h agoPassed402758 ms$0.02
6 h agoPassed402796 ms$0.02
11 h agoPassed402327 ms$0.02
16 h agoPassed402808 ms$0.02
20 h agoPassed402765 ms$0.02
Show 10 older checks
25 h agoPassed402783 ms$0.02
29 h agoPassed402789 ms$0.02
34 h agoPassed402735 ms$0.02
38 h agoPassed402915 ms$0.02
42 h agoPassed402851 ms$0.02
46 h agoPassed402421 ms$0.02
2 days agoPassed402764 ms$0.02
2 days agoPassed402332 ms$0.02
2 days agoPassed402467 ms$0.02
3 days agoPassed402818 ms$0.02