Storybook MCP constrains AI generation to design-system components and runs quality gates¶
Insight: Storybook MCP exposes a design system's components to coding agents and runs the resulting work through Storybook's existing accessibility and visual-test infrastructure. In Brad Frost's walkthrough with Dominic Nguyen, the agent assembled a new search feature from sanctioned components and was caught by real a11y checks before merging — shifting the AI's role from open-ended code generation to bounded composition inside a known component vocabulary.
Detail: Pattern matches the broader thesis that design-system rigor amplifies, rather than competes with, AI productivity: the system narrows the search space and the test harness provides ground truth. Single practitioner walkthrough; vendor co-author (Storybook), so cap at medium until independently corroborated.