You can use our API if you would like to use the data available in the app for building your own system. API is activated for you on Optimize, Agency, and custom plans (more than 5000 keywords) for free.
Our API documentation is available here: Nightwatch API docs.
To pull daily rankings from our standard API, you first need to add your domains and keywords, either via the web interface or API calls. When the domains/keywords setup is done, the process is straightforward - our system will update keyword rankings daily, and you can fetch them at any time using your own system, along with other useful stats.