Rentsync Partners REST API
REST API described on the public Rentsync Partners portal (branded "LIFT System API") as giving partners "access to the underlying data structures of the LIFT System" with "detailed Canadian rental information". This is the API layer behind the Rentals.ca Network's rental listing data. Documentation is not public — https://partners.rentsync.ca/documentation returns HTTP 302 to /users/sign_in — and no base URL, endpoint list, or authentication scheme is disclosed anonymously. Access requires registering and submitting a written application describing what you plan to build.