Send secure authorized requests to the Apply Financial API

Apply Financial uses OAuth to provide authorized access to its API.


  • Secure – Users are not required to share their account credentials with 3rd party applications, increasing account security.
  • Standard – A wealth of client libraries and example code are compatible with Apply Financials OAuth implementation.

Apply Financial API Authentication Model

There are two forms of authentication.

User authentication

This is the most common form of resource authentication in Apply Financials OAuth  implementation. A signed request identifies an application’s identity in addition to the identity accompanying granted permissions of the end-user the application is making API calls on behalf of, represented by the user’s access token.

GET and POST requests

You can submit details using either GET or POST requests, both are secure but some companies prefer to submit details using POST requests as an additional security measure.


All our services submit via HTTPS, this ensures that communications are encrypted