the402 endpoint detail

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api.freestylevault.com v1 rates

https://api.freestylevault.com/v1/rates

answers 402

Committed IFTA tax rates for a quarter (?quarter=2026-Q2&fuel_type=diesel&jurisdiction=WA), grouped by jurisdiction × fuel type with effective periods clipped to the quarter — mid-quarter revisions read as separate periods. Human-reviewed against iftach.org every quarter.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x421d31725e1e7990662600a780ebbb6c92f1cb09
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
235 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:21:05.276Z (2h ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.freestylevault.com%2Fv1%2Frates"