docs/data/reusables/copilot/copilot-extensions/extending-copilot-chat.md

{% data variables.copilot.copilot_extensions %} integrate the power of external tools into {% data variables.copilot.copilot_chat_short %}, helping you reduce context switching and receive responses with domain-specific context. You can install {% data variables.copilot.copilot_extensions_short %} from the {% data variables.product.prodname_marketplace %} or build private ones within your organization, then type @ in a chat window to see a list of your available extensions. To use an extension, select the extension from the list or type the full slug name, then type your prompt.