Disclosed are examples of searching for content associated with multiple applications. In various examples, a first application can obtain a search query and provide a request to a second application to search for content associated with the second application that corresponds to the search query. The request can include a key that indicates to the second application that the first application is authorized to request the second application to search for the content. The first application can obtain a search result from the second application based on the request an present the search result in a user interface for the first application.