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diagram-design
Create branded architecture, IT current-state, flowchart, sequence, state machine, ER/data model, timeline, swimlane, quadrant, radar/spider, polar chart (polar/radial lollipop), loop/flywheel, nested, tree, org chart, layer stack, Venn, pyramid/funnel, treemap, heatmap, bar, waterfall, line, Gantt and scatter charts, high-level, process, medallion, data flow, DP integration, DP security matrix, Sankey, fishbone, Wardley map, kanban, user journey, deployment, dependency graph, UML class, story map, or database schema diagrams as HTML/SVG/PNG, with .drawio and .excalidraw import support, plus lifecycle phase maps and onboarding guidance.
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// RATINGS
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// README
Diagram Design
Editorial diagrams your designer won't hate.
New in 2.0 — the Loop: flywheels with a shared-memory hub. The dashed lines are the write-backs.
New in 2.3: semantic system patterns and optional accessible motion, while static output stays the default.
New in 2.5.10: ten more layout grammars — Sankey, fishbone, Wardley map, kanban, user journey, deployment, dependency graph, UML class, story map, and database schema.
Editorial diagram types for Claude Code, Codex, Factory Droid, Pi, and Agent Skills-compatible hosts. Self-contained HTML + SVG. No shadows. No Mermaid slop. Semantic patterns describe behavior separately from layout, so a queue, policy trace, or trust boundary can use the nearest existing type without expanding the type count. Static HTML remains the default; optional motion is available for ordered explanations. The skill also redraws draw.io, Mermaid, or Excalidraw sources at a chosen format, size, and detail level.
No Figma. No generic rounded boxes. No 30-minute color-picking sessions.
Why I built it
I write at littlemight.com (and run BestSelf.co on the side). Every time I needed a diagram — an architecture sketch, a flowchart, a pyramid of what matters most — I'd ask Claude and get back a generic rounded-box thing that looked nothing like the rest of the site. I'd either fight with Figma for 30 minutes or just skip the diagram.
So I built a Claude Code skill for it. Editorial-quality visual types, matched to your brand in 60 seconds by reading your website.
The highest-quality move is usually deletion. Every node earns its place. The accent color is reserved for the 1–2 things the reader should look at first. Target density: 4/10.
What it makes
Every visual type ships in three static variants: minimal light, minimal dark, and full-editorial. Open any of them directly in a browser. There is no build step, JavaScript, or external image dependency.
// HOW IT'S BUILT
KEY FILES