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# Anthropic working on MCP Apps with interactive UI components
- URL: https://www.testingcatalog.com/anthropic-working-on-mcp-apps-with-interactive-ui-components/
- Published: 2026-01-21T16:51:00.000Z
- Updated: 2026-01-21T16:51:00.000Z
- Description: Anthropic is testing @ mentions for MCPs in Claude Cowork, hinting at possible UI widget support, plus improved chat search features.
- Author: Alexey Shabanov
- Tags: Claude News, AI Rumours, Latest AI News

Anthropic appears to be **testing “@” mentions** inside the Claude Cowork chat composer. Typing or tapping “@” would open a pop-up of callable actions from connected MCPs. One example is a Puppeteer MCP action that can pull browser console logs into the chat, suggesting that Cowork is being tuned for tighter tooling and debugging workflows inside a single thread.

What stands out is that the same @ menu also surfaced sample entries that do not read like MCP tools but like app-style actions: “hello world,” “counter,” plus “imagine SVG widget” and “imagine HTML widget.” This mirrors the [ChatGPT apps concept](https://www.testingcatalog.com/openai-launches-chatgpt-apps-and-sdk-preview-outside-eu/), where apps can return richer, structured outputs into the chat UI, including embedded widgets rather than plain text. If Claude adopts a comparable approach, it could become a second major surface for developers building chat-native apps that render UI in-line, potentially across multiple platforms with similar patterns.

![Claude](https://storage.ghost.io/c/2a/1b/2a1b1782-8506-4d7d-bf53-ad3fb52e2a0f/content/images/2026/01/Claude-01-21-2026_01_07_AM--1-.jpg)

Separately, earlier “[knowledge base](https://www.testingcatalog.com/anthropic-works-on-knowledge-bases-for-claude-cowork/)” traces seem to have shifted toward project selection, implying projects may be the intended container for persistent context as their memory updates over time. There are also signs of a **revamped chat search**, with a dedicated pop-up for querying past conversations, aimed at making long-term usage easier to navigate.