Claude Skills for diagrams
Generate Mermaid and PlantUML diagrams that are readable, focused, and ship in docs/PRs/wikis. Flowcharts, sequence, ERD, architecture, decision trees. Capability skills for any role.
How to install
Claude Code (CLI): Download the pack, then unzip into your skills folder.
mkdir -p ~/.claude/skills
unzip ~/Downloads/diagram-pack.zip -d ~/.claude/skills/For project-only skills, use .claude/skills/ in your repo root instead. Restart Claude Code (or the session) and the skills become available.
Claude.ai (web): Upload via Settings → Skills (where supported on your plan).
Skills in this pack
Mermaid Flowchart Builder
Generates a clean Mermaid flowchart for a process or decision flow. Top-down or left-right, decision diamonds, end states.
Sequence Diagram Builder
Generates a Mermaid sequence diagram for service-to-service or actor-to-system interactions. Async, alt/loop, notes.
ERD Builder
Generates a Mermaid entity-relationship diagram for a database schema. Entities, attributes, types, cardinality.
Architecture Diagram Builder
Generates a system architecture diagram — components, data stores, external deps, request flow. Mermaid graph or PlantUML C4.
Decision Tree Builder
Generates a decision tree (clinical, troubleshooting, classification) with yes/no branches and terminal recommendations.
Mindmap Builder
Generates a Mermaid mindmap for brainstorming, topic exploration, or breaking down a problem into branches.
Org Chart Builder
Generates a Mermaid org chart with hierarchical reporting lines, rounded boxes, and dotted-line for matrix relationships.