ToolVet
15trust / 100

Logistics Postal Upn Tracking

by SiteCheck Trade & Energy in Other

x402 APIFailing, checked 9 min ago

International postal tracking number check (UPU S10 format, e.g. RR123456785GB): validates the 8-digit serial with the S10 check digit, decodes the service type from the first letter (EMS, registered, parcel, insured...), names the origin postal country from the last two letters, and returns tracking links (origin post and multi-carrier trackers). It does not read the item's live scan history.

GET
https://api.tradeenergy-api.workers.dev/api/logistics/postal-upn-tracking
Price
$0.002
per call in USDC
Uptime
0.0%
last 30 days
Response time
-
no timed checks yet
Last check
Failed
9 min ago, next in 48 min

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 9 min ago: Amount "0.002" is not in atomic token units

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

How to call it

GET https://api.tradeenergy-api.workers.dev/api/logistics/postal-upn-tracking

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

From the listing.

GET https://api.tradeenergy-api.workers.dev/api/logistics/postal-upn-tracking?number=RR123456785GB

Parameters

ParameterTypeRequiredDescription
numberstringYesS10 number: 2 letters, 9 digits, 2-letter country code, e.g. RR123456785GB

Example response

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

{
  "checkDigit": 5,
  "checkDigitValid": true,
  "checkedAt": "2026-10-23T09:37:58.776Z",
  "expectedCheckDigit": 5,
  "note": "Valid S10 number. Scan history is on the posts' tracking pages.",
  "number": "RR123456785GB",
  "originCountry": "United Kingdom",
  "originCountryCode": "GB",
  "serial": "12345678",
  "service": "registered letter",
  "serviceIndicator": "RR",
  "source": "UPU S10 standard",
  "trackingLinks": [
    "https://www.royalmail.com/track-your-item#/tracking-results/RR123456785GB",
    "https://parcelsapp.com/en/tracking/RR123456785GB"
  ]
}

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 'https://api.tradeenergy-api.workers.dev/api/logistics/postal-upn-tracking?number=RR123456785GB'

# 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://api.tradeenergy-api.workers.dev/api/logistics/postal-upn-tracking?number=RR123456785GB' \
  | 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%2Fapi.tradeenergy-api.workers.dev%2Fapi%2Flogistics%2Fpostal-upn-tracking
const res = await pay("https://api.tradeenergy-api.workers.dev/api/logistics/postal-upn-tracking?number=RR123456785GB");
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.get("https://api.tradeenergy-api.workers.dev/api/logistics/postal-upn-tracking?number=RR123456785GB")
    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
9 min agoAmount "0.002" is not in atomic token units402102 ms$0.002
9 h agoAmount "0.002" is not in atomic token units402141 ms$0.002
17 h agoAmount "0.002" is not in atomic token units4021.8 s$0.002
25 h agoAmount "0.002" is not in atomic token units402898 ms$0.002
33 h agoAmount "0.002" is not in atomic token units402161 ms$0.002
Show 10 older checks
41 h agoAmount "0.002" is not in atomic token units40246 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40294 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40273 ms$0.002
3 days agoAmount "0.002" is not in atomic token units4021.1 s$0.002
3 days agoAmount "0.002" is not in atomic token units40245 ms$0.002
3 days agoAmount "0.002" is not in atomic token units4025.5 s$0.002
4 days agoAmount "0.002" is not in atomic token units40297 ms$0.002
4 days agoAmount "0.002" is not in atomic token units402541 ms$0.002
4 days agoAmount "0.002" is not in atomic token units402875 ms$0.002
4 days agoAmount "0.002" is not in atomic token units402101 ms$0.002