store.cryptotradecalc.com api reg-changes

https://store.cryptotradecalc.com/api/reg-changes

answers 402

reg-watch-changes: Incremental feed of US Federal Register rules, proposed rules, and notices published since a date you supply. Built for scheduled polling: pass since=YYYY-MM-DD and get only documents you have not seen, each with its document number, agency, type, date, and direct link, plus nextSince for your next poll. Dedupe on documentNumber. Fails closed if the source is unreachable, so an

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.

Price: $0.05
Network: base
Pay to: 0x7849Ed8A93815Fe26a38b5368498b4Fc6210Be8a
Spec dialect: v2 (declares x402Version 2)
Transport: PAYMENT-REQUIRED header
HTTP method: GET
Response latency: 251 ms
Payment options: 1 usable of 1
Last checked: 2026-08-15T14:39:32.505Z (4d ago)
Category: search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fstore.cryptotradecalc.com%2Fapi%2Freg-changes"