For two decades, SaaS has bundled three things: data, logic, and interface. The interface was the moat. Users learned your workflows, memorized your shortcuts, and built muscle memory around your menus. Switching costs weren’t just about data migration - they were about cognitive reinvestment. You didn’t leave Salesforce because you knew Salesforce.

Claude MCP Apps unbundles the interface. When a user interacts with Asana through Claude, they’re using Asana’s data and logic but Anthropic’s interface.

The destination website is dead for routine tasks. The app becomes a backend. And Claude becomes the AI OS for all knowledge work: