# Event Handlers Event Handlers are used to trigger Actions. In general, Event Handlers are what connects User Interfaces to Actions. This Topic gives you an overview of the different Event Handlers, and how to use them. ### Video You may see a video on Event Handlers below. {% embed url="" %} A video on Event Handlers {% endembed %} ### Documentation Relevant articles in our documentation: * [Event Handlers](/reference/platform-concepts/event-handlers.md) * [Actions](/reference/actions.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.appfarm.io/appcademy/appfarm-fundamentals/actions-and-logic-fundamentals/event-handlers.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.