Kevin Roast’s Phoria2 is a small WebGL 2 library for interactive charts, labelled diagrams and product viewers. Its useful detail for AI coding: a misspelled option produces an error explaining the correction, rather than silently drawing the wrong thing.

The accompanying agent skill supplies an API reference, schemas and a browser-check workflow for errors, canvas size, tooltips and idle redraws. The gallery shows what the pieces can make.

November 1’s version 1.2 adds keyboard navigation and screen-reader descriptions. These are documented capabilities, not an accessibility audit; a mobile tester also reported inconsistent hover behavior. The skill targets business visuals, rather than games or custom shaders.