usaref Changes Feed – North American Government Reference Data

API ↗

usaref Changes Feed – North American Government Reference Data is a paid API for AI agents from usaref.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-27).

Returns a list of government reference data series (policy rates, VAT, minimum wages, public holidays) that have changed since a given date for Canada and/or the US.

How this service works

North American government reference data for 10 countries as cited JSON: central-bank policy rates, VAT/GST and VAT registration thresholds, CPI, corporate, personal and withholding tax, social contributions, minimum wages, statutory interest, official FX rates, filing deadlines and public holidays (coverage varies by country). Every value carries its official source URL and last-confirmed date. Single facts $0.003; country brief (every series for one country) $0.01; cross-country compare (one series, up to 10 countries) $0.02; tax-ID and VAT-number checks $0.003; computed answers (VAT, income tax, working days, minimum-wage check) $0.01-$0.02. Pay per call in USDC on Base via x402 or MPP, no signup, or by card with credit packs or monthly plans on one key valid across all 7 regional services. Free tier: GET /catalog, plus a free email key with 50 answer calls a day, commercial use allowed. Finished answers, one cited dossier per call (supported countries vary per job; others are refused free): cost this hire (wage-floor verdict, contributions, employer cost) $0.50; charge this sale (which VAT applies, net/VAT/gross) $0.50; charge this sale certified (plus a signed VAT-rate extract) $0.75; invoice due date and statutory late interest $0.40; country evidence pack (brief plus signed extracts) $0.25; hire compare $0.75 for 2 countries, $1.00 for 3-5; next filings (VAT, PAYE, corporate-tax due dates rolled for holidays) $0.35. Free trial: 3 computed-answer calls per day per IP on POST /v1/answers/* with header X-Free-Trial: 1 (without it, the normal x402 402; once used up, the 402 carries free_trial_resets_at). MCP answer tools use the trial automatically when no api_key is passed. Every series of the evaluation country is free. Card credit (same per-call price as x402): /pricing.

Output

A JSON object with a 'since' date and a 'changes' array. Each change entry includes the series name (e.g. 'minimum-wage'), the country code (e.g. 'us' or 'ca'), and the effective date of the change. Each value in the broader API carries a citation to its official primary source, an effective date, a last-confirmed date, and a staleness flag.