With the MCP protocol, Anthropic created the de facto standard for AI models and agents to talk to third-party applications. After donating the MCP protocol to the Agentic AI Foundation last December, Anthropic today released a major new open extension to MCP that will allow MCP servers to serve up an interactive app-like experience right within the chat interface.
Anthropic, of course, is building this feature right into the web and desktop experiences for Claude. It’s worth stressing, however, that this is an open protocol, so any other…

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