/design preview

/design is aptrouter’s AI web-design agent. Its premise: “does this frontend look good?” should be a machine-checkable pass/fail, not a vibe. The model authors the markup; the engine renders it in headless Chromium and runs deterministic quality gates — WCAG 2.2 AA contrast, design-token adherence, anti-slop heuristics, accessibility, 8pt grid, and motion gates — so nothing ships that fails the floor. No LLM judges anywhere in the gating path.

Status — as of 2026-06-22

/design is in preview behind a waitlist. The full studio flow works end to end today: brief → design system → authored markup → real rendered screenshots → deterministic gates → iterate → assemble → export. Exports are CSP-locked HTML (no JavaScript by architecture) plus design-token files you can drop into an existing codebase.

What’s left before open access is productisation — hosted access, billing, and the public API surface — not the design engine itself.

Join the private preview at aptrouter.com/design and we’ll email you when a slot opens.

Don’t want to wait? The engine is open source (MIT) — you can run the design-mcp server yourself from github.com/A-Hamilton/design-mcp. The hosted preview adds the studio UI and managed access on top of the same gates.