Liquid Dev gives Claude Code deep knowledge of Shopify's Liquid templating language, Online Store 2.0 theme architecture, and modern theme development workflows. It bundles a complete Liquid reference (objects, tags, filters, section schemas, metafields, dynamic sources, performance patterns), a theme development guide covering Shopify CLI, Dawn customization, settings schemas, and deployment — plus an opinionated Shopify developer agent that builds production themes with vanilla CSS/JS, merchant-friendly settings, and performance-first defaults. Built by a developer with 13+ years of Shopify experience who got tired of watching AI hallucinate Liquid syntax.