Bakey currently does not provide any separate APIs or SDKs.

Since iOS handles font installation and management at the OS level, no additional integration is required.
Third-party apps can simply use Apple’s standard APIs (UIFont, CTFont) to access the fonts installed on the system.

Please refer to the following Apple documentation for how to load fonts installed by the Bakey app using Apple’s system font APIs:
 

• Apple — Font Management in iOS (Accessing system fonts via UIFont/CTFont)
  Text display and fonts | Apple Developer Documentation

• Apple — UIFont Class Reference
  UIFont | Apple Developer Documentation

• Apple — CTFont Reference
  CTFont | Apple Developer Documentation