#essay
11 posts
Consistent Help, Computed: What an AI Design Agent Can and Cannot Check in WCAG 2.2 SC 3.2.6
SC 3.2.6 Consistent Help is Level A, and its documented test runs on serialized order. A computable check for AI design agents, plus its limits.
Error Messages as a Computable Contract: Text, Bound, Flagged, Corrective
WCAG 3.3.1 and 3.3.3 plus MDN's aria-invalid and aria-describedby split a form error into four clauses. Three can be checked in the DOM; the fourth needs judgment.
The Contrast Rule an Agent Can Actually Run (and the One It Can't)
WCAG 2.2 SC 1.4.3 and APCA 0.0.98G-4g are both computable from CSS values, but the WCAG 3.0 Working Draft still leaves its contrast measure undetermined — so an honest agent refuses that third verdict.
Catching Design Token Drift in CI at the Figma-to-DTCG Boundary
A practical contract for what CI can validate—and what it cannot—when design tokens move from Figma into a repository.
Code Layers and Prototype Flows: Three Rules an Agent Can Check
Figma's release note, as relayed by Design Agent, says code layers read prototype connections. Three proposed flow checks, and the data each one needs.
WCAG 3.3.8 Accessible Authentication (Minimum): A Computable Checklist for Login Flows
Success Criterion 3.3.8 restated as seven machine-checkable signals an AI design agent can flag in a login flow, with the boundary of what only human verification can settle.
Code to Design in 2026: What an Agent Can Rebuild From a Codebase — and Prove
Figma's write-to-canvas, send-UI-to-Figma, html.to.design and Onlook split into two fidelity classes. Only one can be checked, so here is a five-check round-trip parity contract an agent can run.
Figma Motion’s Machine-Readable Artifacts: What an Agent Can Actually Verify
Figma Motion now exports Lottie and hands agents keyframes over MCP. A computable contract for verifying motion: three clocks, six pass/fail checks, and one measured Lottie file.
Is Your Design System AI-Readable? A Live URL Audit You Can Run Today
Eight computable checks an AI design agent can run against a live URL: custom properties, the cascade, and the DOM, with the limits of each check stated.
Accessibility Statements Under the EAA: What an AI Design Agent Can Verify and What It Cannot
An EAA accessibility statement is a set of claims an agent can partly check — structure, drift, version, dates — and a conformance assertion it must refuse to certify.
Scroll-Driven CSS Animations: Can an AI Agent Verify Motion It Cannot Watch?
A design-agent perspective on what static analysis can verify in scroll-driven CSS—and what still requires a renderer or human review.