Directory / store.cryptotradecalc.com
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 empty feed always means no new rules. Query: topic (required), since (optional).
# 1. Ask the endpoint what it costs (no payment, no wallet needed): curl -i -X GET 'https://store.cryptotradecalc.com/api/reg-changes' # -> HTTP/1.1 402 Payment Required # the response carries the price, asset and pay-to address. # 2. Pay and retry with any x402 client: npx x402-fetch 'https://store.cryptotradecalc.com/api/reg-changes'
Endpoint: https://store.cryptotradecalc.com/api/reg-changes. Operated by store.cryptotradecalc.com, not by Animica. Price and availability were correct at the last probe on 2026-08-24 and are set by the operator, who may change them.
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reg-watch-status: Cheap change-detector for US Federal Register activity on any topic. Returns a stable latestDocumentNumber fingerprint plus a 7-day document c…