What context are you giving AI coding agents before they touch the UI?

A developer building with AI coding agents notes that providing only a Figma link or screenshots is insufficient for achieving precise UI designs. They observe that AI-generated UIs often deviate from the original design, exhibiting issues with spacing, hierarchy, and typography, leading to a loss of character despite functionality. The developer is curious about what other users consider the definitive source of truth for AI agents, such as Figma, written context, the codebase, or a combination thereof.

This report highlights a common challenge with AI coding agents, unlike earlier discussions that focused on their ability to generate functional code.