Nuki offers open interfaces for the integration of Nuki into lots of different use cases.
Note: The Bridge API is NOT supported by the integrated Wi-Fi module of the Smart Lock 3.0 Pro. To use the Bridge API, connect your Smart Lock 3.0 Pro with the Nuki Bridge. This way you can benefit from all supported integrations.
More information to the open API you can find here.
The Smart Lock 2.0 as well as 3.0 (Pro) support Apple HomeKit. The first generation of the Nuki Smart Lock was not yet HomeKit capable. Learn more about the integration of Apple HomeKit.