When a product adds an agent interface, it is tempting to treat it as a second application: the web interface is for people, while a collection of tools is for AI. That split is convenient at the UI layer. It becomes dangerous when it reaches the transaction model.
Source: [Dev.to](https://dev.to/seasonkoh/one-commerce-protocol-two-interfaces-pwa-for-humans-and-mcp-for-agents-4fme)