SimpleNexus

nCino Mortgage API (formerly SimpleNexus API)

OAuth 2.0 REST API that replaces the legacy SimpleNexus API. The initial release covers Organization and User Management (companies, branches, users) and a modern webhook flow with delivery retries, event filtering, and increased security.

GitHub

Documentation

📖
Documentation
https://developer.ncinomortgage.com/mortgage/docs/getting-started
📖
APIReference
https://developer.ncinomortgage.com/mortgage/reference
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/simplenexus/refs/heads/main/authentication/simplenexus-authentication.yml

Other Resources

🔗
Webhooks
https://raw.githubusercontent.com/api-evangelist/simplenexus/refs/heads/main/asyncapi/simplenexus-webhooks.yml
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/simplenexus/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
name: nCino Mortgage API (formerly SimpleNexus API)
description: OAuth 2.0 REST API that replaces the legacy SimpleNexus API. The initial release covers Organization
  and User Management (companies, branches, users) and a modern webhook flow with delivery retries, event
  filtering, and increased security.
humanURL: https://developer.ncinomortgage.com/mortgage
baseURL: https://api.ncinomortgage.com
tags:
- Mortgage
- Lending
- Webhook
tags_raw:
- Mortgage
- Lending
- Webhooks
properties:
- type: Documentation
  url: https://developer.ncinomortgage.com/mortgage/docs/getting-started
- type: APIReference
  url: https://developer.ncinomortgage.com/mortgage/reference
- type: Authentication
  url: authentication/simplenexus-authentication.yml
- type: Webhooks
  url: asyncapi/simplenexus-webhooks.yml