# Events and requests in Amazon Connect Agent Workspace
<a name="getting-started-events-and-requests"></a>

App developers can easily create applications that seamlessly integrate into the agent workspace experience in the Amazon Connect agent workspace with the event and request functionality natively supported by [Amazon Connect SDK](https://github.com/amazon-connect/AmazonConnectSDK). You can build an app by leveraging the [Amazon Connect SDK](https://github.com/amazon-connect/AmazonConnectSDK) to subscribe to agent/contact events (invoking a particular handler when the event occurs) and make requests to quickly retrieve agent/contact data.

This is the main module needed to integrate your app into the agent workspace and get exposure to its agent/contact data and make your app responsive throughout the contact-handling lifecycle.
+  **Event** 

  Refers to an asynchronous subscription-publication model, where the [Amazon Connect SDK's](https://github.com/amazon-connect/AmazonConnectSDK) client allows the 3P app to subscribe a callback to-be-invoked when a specific event occurs, such as an agent changing their state from * Available* to *Offline*. It then performs an application-defined action using the event context when said event fires. If and when an event fires is dependent on the event type. For more information, see the [API Reference](api-reference-3P-apps-events-and-requests.md).
+  **Request** 

  Refers to a request-reply model, where the [Amazon Connect SDK's](https://github.com/amazon-connect/AmazonConnectSDK) client allows the 3P app to make requests on demand to retrieve data about the current contact or the logged-in agent.

 **Install from NPM** 

Install the contact package from NPM by installing ** @amazon-connect/contact**.

```
% npm install --save @amazon-connect/contact  
```