Dongcha reports that Claude supports using a third-party full editor alongside the chat window
BIBIBI
AT A GLANCE
According to Beating AI, after the upgrade, Claude can open a full third-party editor next to the chat window, allowing users and AI to modify the same document.
Article
Claude Brings Full Software into the Chat Window: Humans and AI Can Edit the Same Document Together
Dongcha Beating AI Flash News: Anthropic has upgraded Claude, which can now open full editors of third-party software such as Notion and Confluence directly alongside the chat window. Users can modify content themselves, or let Claude directly modify the currently open document and see the results in real time.
MCP originally 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 pages currently open by the user.
Among them, App Tools allows web pages to open their own operational functions to AI. For example, AI can read the current document and modify content through interfaces provided by the web page, with results appearing directly in the editor the user is using, eliminating the need for copy-pasting.
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.
Original link: https://m.theblockbeats.info/flash/376781
Key points
01
The original text states that Anthropic has upgraded Claude so that full editors for third-party software such as Notion and Confluence can be opened alongside the chat window.
02
The original text states that users can modify the content themselves, or have Claude modify the currently open document and see the results in real time.
03
The original text states that MCP Apps were officially launched in January 2026, allowing third-party software to place interactive interfaces into AI chat windows; Claude already supported it at the time, but mainly displayed simplified interfaces.
04
The original text states that App Tools allows web pages to open operational functions to AI, reading and modifying the current document through interfaces provided by the web page.
05
The original text states that this capability is based on the open MCP Apps extension; ChatGPT and VS Code have also previously supported MCP Apps.
AI-assisted interpretation
The following is analysis, separate from reported facts. Verify important claims independently.
According to the original description, the change is not just about letting AI read documents, but about placing a full editor next to the chat window. Users and Claude can modify the same open document, with changes displayed directly in the editor, eliminating the need for copy-pasting back and forth.
Why it matters to readers
This update places AI modifications and manual user edits within the same interface. The original text also notes that the underlying extension is not exclusive to Claude, but it remains unclear whether other products already support this newly added capability.
It can be understood as: using a document editor while chatting, and having the AI directly modify the current document; which specific software and features are available still needs to be confirmed.
Risks and unknowns
The evidence is media paraphrase and does not provide Anthropic's original announcement or independent verification.
No indication is given of the feature's availability date, eligible accounts, regions, or the full range of supported software.
Does not specify the permission control, confirmation, and undo mechanisms when AI reads and modifies documents.
ChatGPT and VS Code already support MCP Apps, but that does not mean they already support the newly added capabilities this time.
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MCP
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