StyleSeed

StyleSeed is an open-source system that helps AI coding agents apply expert design judgment repeatedly and consistently. It compiles design decisions into project-local rules, preserves choices in your repository, and supports code and rendered verification. The tool works with Claude Code, Codex, and Cursor, offering 23 core skills, multiple output grammars, and semantic color palettes.

Designed for teams that want agents to follow established design patterns rather than generate from scratch, StyleSeed includes a render-score-revise loop to validate outputs. Benchmarks show a 5.3-point improvement in consistency when using enforced design gates. Installation takes 30 seconds via npm, and the system emphasizes that human review remains essential for quality assurance.