Offerpad Helix API (private customer backend)
Offerpad's real transaction API, and it is closed. Discovered on 2026-07-26 as the API_URL constant compiled into the Offerpad Connect single-page-app bundle at https://connect.offerpad.com/bundle.js, the host at https://helix.offerpad.com serves the customer identity, cash-offer transaction, contract, document, form and device endpoints that the Offerpad Connect web portal and the Offerpad mobile apps call. It is entirely undocumented: there is no developer portal, no reference, no schema and no public client registration, and every path except /.well-known/oauth-authorization-server returns {"statusCode":404,"message":"Resource not found"} to an anonymous caller. That one live discovery document is a conformant RFC 8414 authorization-server metadata document delegating to an Okta custom authorization server, which is why Offerpad's identity layer is machine-discoverable while none of its business capability is. Catalogued as evidence that the capability exists and is deliberately closed, not absent — the observed endpoint inventory is recorded verbatim from the first-party client with no schemas inferred.