> ## Documentation Index > Fetch the complete documentation index at: https://docs.discord.com/llms.txt > Use this file to discover all available pages before exploring further. # Components & Modals > Add interactive buttons, menus, layout elements, and modal dialogs to your Discord app. Discord Bots & Companion Apps Hero Image Discord's component system lets your app build rich, interactive UI directly inside the Discord client, with no custom frontend needed. ## Message Components Message Components are interactive and layout elements attached to messages your app sends. Discord supports three categories: * **Layout components** for organizing content * **Content components** for displaying text and media * **Interactive components** like buttons, select menus, and text inputs that users can act on Components are sent as structured data alongside your message and rendered natively in the Discord client. ## Modals Modals are form-like overlays that your app can present to users in response to an interaction, such as a button click, slash command, or select menu selection. They collect freeform input through text fields and are a natural fit for multi-field data entry, confirmations, bug reports, or any configuration flow that needs more than a single tap to complete. Unlike message components, modals aren't attached to a message. They're sent as an interaction response and appear as a focused overlay in the client. The user fills in the fields and submits, which triggers a new interaction your app can handle. ## Further Reading Full guide to available component types and how components are sent in messages. A guide on sending Message Components with code examples. A guide on building and displaying Modal Components with code examples.