ToolVet
79trust / 100

Parcels Detect Carrier

by Eckari in Other

x402 APIPassing, checked 1 h ago

Identify which carrier issued a tracking number using a deterministic, versioned signature set - prefixes, lengths, carrier check digits and UPU S10 structure - returning the carrier, how distinctive the match is, every ranked candidate with typed evidence, and the parsed S10 details. No upstream call and no carrier account required. Use when: Which carrier is this tracking number from?

GET
https://api.eckari.com/v1/parcels/detect-carrier
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
567 ms
971 ms slowest 5%
Last check
Passed
1 h ago, next any minute now

Run a free test callHow to call it

Reliability

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

How to call it

GET https://api.eckari.com/v1/parcels/detect-carrier

Each call costs $0.001 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.eckari.com/v1/parcels/detect-carrier?tracking_number=1Z+879E93+03+4683+4440

Parameters

ParameterTypeRequiredDescription
destination_countrystringNoOptional ISO 3166-1 alpha-2 destination country hint. Used only as a small tie-breaker; it never invents a candidate.
origin_countrystringNoOptional ISO 3166-1 alpha-2 origin country hint. Used only as a small tie-breaker; it never invents a candidate.
tracking_numberstringYesTracking or consignment number. Spaces and hyphens are removed and letters upper-cased before matching (4-40 letters and digits after normalisation). Digits and letters are never altered.

Example response

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

Example response, 39 lines
{
  "data": {
    "candidates": [
      {
        "carrier_id": "ups",
        "carrier_name": "UPS",
        "evidence": {
          "check_digit": "ups_mod10",
          "country_hint": null,
          "length": 18,
          "prefix": "1Z",
          "s10_origin_country": null
        },
        "format_id": "ups_1z",
        "match_score": 0.98,
        "match_strength": "distinctive"
      }
    ],
    "carrier": {
      "id": "ups",
      "name": "UPS"
    },
    "formats_matched": 1,
    "input": {
      "normalised": "1Z879E930346834440",
      "original": "1Z 879E93 03 4683 4440"
    },
    "match_score": 0.98,
    "match_strength": "distinctive",
    "signature_version": "1.1.0",
    "upu_s10": null
  },
  "meta": {
    "capability": "parcel.detect_carrier",
    "freshness": "static",
    "source": "eckari_carrier_signatures",
    "version": "2.0.0"
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.eckari.com/v1/parcels/detect-carrier?tracking_number=1Z+879E93+03+4683+4440'

# 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.eckari.com/v1/parcels/detect-carrier?tracking_number=1Z+879E93+03+4683+4440' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.eckari.com%2Fv1%2Fparcels%2Fdetect-carrier
const res = await pay("https://api.eckari.com/v1/parcels/detect-carrier?tracking_number=1Z+879E93+03+4683+4440");
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
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.eckari.com/v1/parcels/detect-carrier?tracking_number=1Z+879E93+03+4683+4440")
    print(res.status_code, res.text)

Security scan

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