SoFi Partner Offer Pre-Qualification API
SoFi's partner-offer-api (documented as Partner Offer Pre Qual V2) is a real, first-party external REST API that exposes SoFi's underwriting model to approved partners, returning real-time Personal Loan (PL) and Student Loan Refinancing (SLR) offers based on user-entered criteria via a single POST /po/api/v2/loan-offer/json endpoint. User-entered criteria can be saved to pre-populate a SoFi loan application when an offer is selected on the partner's site, and a 2021 release added specialty SLR handling for Medical and Dental graduate programs. Authentication is by API key / UUID (one per product type, PL or SLR) passed as the accountId in the JSON body, over HTTPS only; testing uses base URL https://dev-external-0.sofitest.com and production uses https://www.sofi.com. Endpoint, method, base URLs, auth model, and response codes were harvested faithfully from SoFi's public Postman workspace (team-sofi / sofi-api).