Tax guidance is exactly the domain where a confident paraphrase is dangerous, and the documentation says outright that this is research grounding rather than legal or tax advice. Used properly it saves the step of finding the authority's current wording; used carelessly it produces an answer that sounds official and is not. Three jurisdictions from one open endpoint is a genuinely useful shape — most tax tools cover one country and want an account first.
Two endpoints under one product. The tax one is open and needs no key; the main bookkeeping endpoint sits behind OAuth. The vendor's pages describe one tool per jurisdiction, and the single endpoint actually exposes all three.
- search_irs — current US tax compliance information
- search_cra — the Canadian equivalent
- search_hmrc — the UK equivalent
Nothing for the tax lookups — the endpoint is open and free. The bookkeeping product itself is $35/mo Start, $59 Pro, $95 Scale, with a 30-day trial.
Paste a URL, then authorize — add the endpoint to your client, then approve the OAuth consent screen