According to CoinMeta, after the upgrade to Claude, users will be able to directly open the full editors of third-party software such as Notion and Confluence next to the chat window. They can modify the same document together with AI and see the results in real-time. MCP originally allowed AI to read and modify data from third-party software through APIs. In January 2026, MCP Apps was officially launched, further supporting the integration of interactive interfaces such as charts and forms into the AI chat window. The latest update enables Claude to display entire websites and to directly operate on the user's current page. App Tools now allows web pages to open their operational functions to AI. AI allows for reading and modifying the current document through web page APIs, with the results appearing directly in the editor used by the user, eliminating the need for copying and pasting. This set of capabilities is built upon the open MCP Apps extension, and ChatGPT, VS Code, and others also now support MCP Apps.