Hallmark, design taste for coding agents

Hallmark is a specialized design skill designed to enhance the output of AI coding agents. It integrates directly with platforms such as Claude Code, Codex, Cursor, and OpenCode, allowing developers to apply design principles before code generation. This aims to eliminate "AI slop" by ensuring the generated code adheres to specific aesthetic and structural standards.

The tool offers a selection of forty-eight distinct themes, each built with real photographs, providing a rich visual foundation for design. Users can apply these themes with a single prompt, enabling the AI to design two pages based on the chosen theme. This capability ensures consistency across different pages while allowing for variations within the same theme.

Hallmark operates by designing the visual and structural elements first, then proceeding to code generation. It also includes a self-checking mechanism to ensure the design output meets its internal quality standards. Installation is straightforward, requiring a single command: `npx skills add nutlope/hallmark -g`.