$0.001
per call · USD Coin on Base
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?
Endpoint
GET https://api.eckari.com/v1/parcels/detect-carrier8
Calls / 30d
2
Unique payers / 30d
Aug 27
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.eckari.com/v1/parcels/detect-carrier", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://api.eckari.com/v1/parcels/detect-carrier?tracking_number=1Z+879E93+03+4683+4440" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"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"
}
}Payment details
0x9d6b6fdb04040a55d58b24ff4c90c08cf6083c8fUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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