the402 endpoint detail

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api-staging.eckari.com parcels detect-carrier

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

answers 402

Identify which carrier issued a tracking number using a deterministic, versioned signature set - prefixes, lengths, carrier check digits and UPU S10 structure - returning ranked candidates with the reasons each matched, the parsed S10 details and a rule-based (uncalibrated) confidence. No upstream call and no carrier account required. Use when: Which carrier is this tracking number from?

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base-sepolia
Pay to
0x7c0Ba1d16322Ee426D6508a74b571Dd73A5a35DA
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
583 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:13:27.138Z (20d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi-staging.eckari.com%2Fv1%2Fparcels%2Fdetect-carrier"