diagram-design Is Back on Top of GitHub Trending at 52,000 Stars. The Skill Is the Product.
Two months after it first showed up here, cathrynlavery/diagram-design was the second-fastest-growing repo on GitHub on Monday at 2,100 stars in a day, now past 52,000 total, with plugin manifests bumped to version 2.6.84 the same afternoon. It is an agent skill, one instruction package you add with npx skills add, that makes Claude Code, Codex, Cursor, Copilot, Factory Droid or Pi draw a diagram as a single self-contained HTML plus SVG file in your brand. Forty-five diagram types now, up from 44 in the description a week ago. No shadows, and the README's own phrase, no Mermaid slop.
The delta since August is what the installs look like. You can point it at your website and it pulls the palette and fonts so every later diagram matches. It imports from draw.io, Mermaid and Excalidraw. It exports PNG and SVG, and the two commits on Monday are about keeping alpha when exporting with presentation opacity, which is the kind of fix you only make when designers are actually shipping the output. There is CI, a changelog, an MIT license, and a skills.sh install counter on the badge row.
What makes a diagram skill worth a second write-up is the shape of the project. There is no model, no server, no app. The entire product is a set of instructions and templates that make a frozen model produce better output, and it sells across six harnesses because the Agent Skills format is shared. Fifty-two thousand stars for a markdown-and-templates repo is the clearest market signal this month that the skill layer is a real distribution channel, and that the thing people will star is the thing that makes the agent's output look like a human made it.
Repo: https://github.com/cathrynlavery/diagram-design
Gallery: https://cathrynlavery.github.io/diagram-design/
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The delta since August is what the installs look like. You can point it at your website and it pulls the palette and fonts so every later diagram matches. It imports from draw.io, Mermaid and Excalidraw. It exports PNG and SVG, and the two commits on Monday are about keeping alpha when exporting with presentation opacity, which is the kind of fix you only make when designers are actually shipping the output. There is CI, a changelog, an MIT license, and a skills.sh install counter on the badge row.
What makes a diagram skill worth a second write-up is the shape of the project. There is no model, no server, no app. The entire product is a set of instructions and templates that make a frozen model produce better output, and it sells across six harnesses because the Agent Skills format is shared. Fifty-two thousand stars for a markdown-and-templates repo is the clearest market signal this month that the skill layer is a real distribution channel, and that the thing people will star is the thing that makes the agent's output look like a human made it.
Repo: https://github.com/cathrynlavery/diagram-design
Gallery: https://cathrynlavery.github.io/diagram-design/
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