AI Agents
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100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.
★ 140.6k starsApache-2.0
View guide →A markup-driven CSS orchestration language for developers and AI agents.
css is an open-source agents project by master-co (master-co/css on GitHub). It has 1,948 GitHub stars and 44 forks, is released under the MIT license, and was last updated on GitHub on 3 October 2026.
Add it to your frontend project.
Express styles in HTML attributes.
The engine generates the CSS.
AI generates consistent markup.
Styles expressed in HTML.
Generates optimized CSS.
AI writes it reliably.
Runtime style composition.
Works with your stack.
Free for any project.
Download the source and move into the project folder.
git clone https://github.com/master-co/css.git
cd cssEvery project documents its own setup; start with install requirements.
cat README.md | head -60Follow the project’s launch command — Docker, pip, npm, or a binary release.
# see README for the exact launch commandIt is an open-source project at master-co/css with 44 forks.
Yes. MIT licensed.
Markup-driven orchestration rather than utility classes.
Small if you know HTML; the attribute syntax is new.
It is framework agnostic; check the docs for integrations.
100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.
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