Claude moves complete software into the chat window: the same document can be edited by both humans and AI together.

Beating AI News Flash: Anthropic has upgraded Claude, which can now open full editors of third-party software such as Notion and Confluence directly beside the chat window. Users can edit content themselves, or let Claude directly modify the document currently open and see the results in real time.

MCP originally already allowed AI to read and modify data in third-party software through interfaces. In January 2026, MCP Apps was officially launched, further allowing third-party software to place interactive interfaces such as charts, forms, and task panels into the AI chat window. Claude already supported this at the time, but mainly displayed simplified operation interfaces.

The latest update allows Claude to display complete websites and directly operate the page currently open by the user.

Among these, App Tools allows webpages to expose their own operational functions to AI. For example, AI can read the current document and modify content through interfaces provided by the webpage, with the results appearing directly in the editor the user is using, eliminating the need to copy and paste.

This capability is based on the open MCP Apps extension and is not a protocol exclusive to Claude. ChatGPT, VS Code, and others have previously supported MCP Apps and can continue to follow up on these new capabilities.