the402 endpoint detail

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fittings.sh hts search

https://fittings.sh/v1/hts/search

answers 402

Candidate HTS classifications for a plain-language product description, each with its code, description, units of quantity and duty rates where the line carries them. A statistical line shows no rate of its own because it inherits its parent’s, which v1/hts/lookup resolves.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.006
Network
base
Pay to
0xe025442C0d6dC17aD2b9eB888B3565bdFCd98638
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
170 ms
Payment options
1 usable of 1
Last checked
2026-08-15T14:38:36.433Z (4h ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Ffittings.sh%2Fv1%2Fhts%2Fsearch"