UI dies, UX remains

An interview with Cline’s creators lit the fuse: their vision of an “agentic” world is, in this diary’s vocabulary, exactly the Vibe era ▸ 22:57. They also kept mentioning MCP, so it got investigated live on camera, and entry 25-1’s thesis acquired its missing piece: the plumbing.

MCP, the Model Context Protocol, is best captured by the comparison found mid-research: the USB-C port of AI ▸ 25:56, one standard plug through which any model reaches any service, no bespoke API integration per pair (N+M connections instead of N×M ▸ 29:33). The examples that made it click: ask how much you spent on food and the assistant queries the bank; “buy the same coffee as last month” and it reaches into Amazon; reschedule with Laura and it edits the calendar, which Gemini already did on camera, booking tomorrow’s gym session into Google Calendar on the first try, “opa, opa, opa” ▸ 35:08.

The synthesis is the entry’s title, said verbatim: “la UI se elimina completamente, y queda solamente UX” ▸ 32:17. When every service is a plug, apps stop being places you go and become capabilities the conversation reaches through, one WhatsApp-simple surface for everything ▸ 32:32. The observation that grounds it in daily life: unlocking your phone and staring at the grid, trying to remember which app icon holds the thing you wanted, that entire cognitive tax is what dies ▸ 33:26.

las apps dejan de ser lugares y se vuelven enchufes →

One sober caveat kept its place in the record: an MCP server is a trust relationship, abandoned or malicious servers can exfiltrate what flows through them ▸ 29:15. The plumbing of the Vibe era will have leaks, and whoever builds the auditing gets a business. Dated here, mid-2025, while “MCP” still needs explaining: check back against this one too…