How AI-assisted native prototypes changed what usability testing could show.

A field study of how 20 open-source design systems and 6 platforms make themselves readable to AI agents.

A small library of extremely crafted, copy-paste components for chat agents, thinking states, human-in-the-loop approvals, and everything agents need.

Gonna send you back to the stone age.

The results are in. Developer adoption across modern CSS features—empirical data on layout practices and usage.