App web API connections

Hi. I need help automating the data extraction process from web application like Google Analytics for example. The work will be understood how the api works to get the most data from the web application to record the data in a database. Here we will develop the software that will do as API calls to get the data, I need you to give us ready how the api works, parameters and filters to get the most data. Payment will be by API delivered. You can use software like Postman for the work. Is necessary understood how web app works to know how to get the data in correctly way. Like Pipedrive (CRM) for example, you need to know that the customer can inform a product for the deal, then you need give this data to on API. For this project we will work with google analytics api. After that we can worl togheter with others apps web. Is necessary to use the last versions of APIs, most recently.
Resume: you need give me the url to make the requests, I need request only new data since the last request, understood how api and app web works to know the necessary data. The goal is a final user to get data from his app web account to obtain information.