AI Agent Diagram Skill diagram-design Returns to GitHub Trending, Reaching 48K Stars

What happened

Since October 8, open-source project diagram-design (by developer cathrynlavery) has climbed GitHub's daily trending chart again — No. 2 on October 8 and still charting on October 9–10, adding roughly 1,700 stars in 24 hours to reach 48,457 (verified by this site on October 10). It previously topped the chart in August, making this its second breakout in two months.

Key facts

1. What it does:an Agent Skill that gives coding agents like Claude Code, Codex, Copilot and Cursor a diagram-drawing capability — plain-word requests produce 44 editorial-grade chart types, from architecture diagrams to sequence diagrams.
2. Format:outputs one self-contained HTML+SVG file that opens with a double-click, with no external dependencies and design rules baked in.
3. Brand matching:per its docs, it can onboard a website to pull its palette and fonts so every later diagram matches the site's style.
4. Slogan:"No shadows. No Mermaid slop." — aimed at Mermaid's default styling.
5. Ecosystem:works with mainstream Agent Skills hosts (Claude Code, Codex, Copilot, Cursor, Gemini CLI, Cline, Windsurf and more); MIT licensed.