Learn how to ZOOM: Zoom. Zoom allows you to batch multiple GET requests into a single HTTP request. This tool can drastically reduce the number of requests your client app needs to make.

Developers can use any programming language that supports HTTP requests and JSON parsing (Java, C#, PHP, Ruby, JavaScript, and so on) to create a Cortex client application. Cortex does not have client libraries developers that you need to download and install in order to build a client application. That said, Cortex works particularly well with JavaScript clients.

First, you don't need to because Cortex builds the URIs for you. That's the benefit of a REST Level 3 API, the API returns the URI of the resource you would use for the next operation. For example, getting an item will return an item with an addtocartform link, which you can use to add the item to a cart. Other APIs require client developers to construct their own URIs to interact with the API, but ours doesn't. All you need to do is follow the API's workflows to interact with the system. Second, constructing your own URIs can be dangerous because if Cortex is upgraded your client app will break. Coding your client app to follow workflows decouples your code from the API, so there is less chance your client will break if the API is upgraded.

First, Cortex constructs the form for you so there is no need to create your own. Second, constructing your own forms can be dangerous because if the API is upgraded and the forms change, your constructed forms will break.

The less calls you make to Cortex, the faster your application will work. You can reduce the number of calls by utilizing FollowLocation and Zoom.

Build your app to access at Cortex through its API Entry Points.