GitHub - caelo-cms/website-design-skills: Free agent skills for designing a website with AI: 11 steps from facts and personas to a tested prototype, each ending with your decision.

Why it matters

caelo-cms has released free, MIT-licensed agent skills on GitHub that guide AI-assisted website design from initial research through CMS handover. Built on the open SKILL.md format, the skills work with any compatible agent, including Claude Code, Codex, Cursor, GitHub Copilot and Gemini CLI. The core problem they address is that unconstrained models default to generic output, so each step generates a file that constrains the next, ending with a short decision sheet the user approves. The process follows established design practice, including Design Council's Double Diamond and content-first methods, while adding AI-specific elements: a fact base to prevent invented claims, explicit anti-defaults, a design contract in DESIGN.md, and a QA loop where the model reviews its own screenshots. Project state persists in STATUS.md and DECISIONS.md, letting users pause and resume. Step 11 handles CMS handover, with a guide for Caelo, an open-source CMS that preserves design integrity through theme tokens, named-field modules and a quality gate.