Helipaddy sites vs RevCarData

Helipaddy's Partner API returns nearby helicopter, EVTOL, and drone landing sites — hotels, aerodromes, pubs, and B&Bs with helipads — as JSON, gated to a per-partner category allow-list. A live GET and OPTIONS preflight against its real API host, helipaddy.com/wp-json/hp-partner/v1/sites, both echoed access-control-allow-origin back with the request Origin, resolving the stored "unknown" cors to "yes"; the GET returned a "hp_partner_api_invalid_key" 401 error, reconfirming auth "API Key" over HTTPS. Partner tokens are issued manually via WhatsApp/email under a negotiated agreement with no public self-serve tier — paid.

RevCarData is a global Year-Make-Model-Trim vehicle database covering EU, US, and Asian markets, exposing 38 structured spec fields — MSRP, powertrain, dimensions, and EV/battery metrics — via a REST API and CSV export. A live GET against its real API host, api.revcardata.com/api/v1/vehicles, returned a 401 "Missing X-API-Key header" error carrying access-control-allow-origin echoing the request Origin — reconfirming auth "API Key" and cors "yes" — over HTTPS. Its site offers a free sign-up-and-get-a-key tier alongside paid plans for higher volume — freemium.