SimpleNexus API
SimpleNexus runs two public documented REST surfaces at developer.ncinomortgage.com: the new nCino Mortgage API v1 with OAuth 2.0, semantic versioning, and retrying webhooks, plus legacy SNAPI covering loans and documents. Docs and Postman are open; tokens are issued, not instant self-serve.
Frequently asked questions
SimpleNexus scores D+ on the API Report Card. SimpleNexus runs two public documented REST surfaces at developer.ncinomortgage.com: the new nCino Mortgage API v1 with OAuth 2.0, semantic versioning, and retrying webhooks, plus legacy SNAPI covering loans and documents. Docs and Postman are open; tokens are issued, not instant self-serve.
Without a usable official API, teams fall back on manual exports, file drops, or one-off vendor integrations. The other option is an unofficial API layer like Supergood that automates the authenticated web app directly.
SimpleNexus is a mobile-first digital mortgage Point-of-Sale (POS) and homeownership platform that unifies the loan officer, borrower, real estate agent, and settlement-services experience for U.S. mortgage lenders.
Vertical: Financial Services, specifically the Mortgage Point-of-Sale (POS) / Digital Mortgage subcategory that sits in front of the Loan Origination System (LOS). Mobile loan application capture (1003) with document upload from the borrower's phone. LO pipeline management and CRM on iOS/Android.
High within mortgage POS.
Loan applications (1003 data): borrower demographics, employment, income, assets, liabilities, REO, declarations, demographic information addendum. Loan events and pipeline state: application started, application submitted, conditions cleared, CTC, funded, closed.
Founded 2011; ~15 years old as of 2026. Mobile-first DNA, SimpleNexus was the first POS to lead with a native iOS/Android loan officer + borrower app rather than a desktop web portal, which is still a differentiator.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.
Yes. Supergood maintains an unofficial SimpleNexus API and MCP server so AI agents and internal tools can read and write SimpleNexus data. See the SimpleNexus integration docs at supergood.ai/docs/simplenexus-api.