What standards does the diagram follow?

The generator references specific notation guides (usecase_diagram_guide.md and mermaid_notation_rules.md) to ensure consistent, standard-compliant UML-style diagrams.

Does this skill create actual image files?

No, the skill generates Mermaid markdown code which is designed to be rendered as a visual diagram in compatible tools like GitHub, VS Code, or Notion.

Where does the skill look for requirements?

You can provide requirements text directly as an argument, or provide a feature name to have the skill automatically search for a corresponding PRD file in your project directory.

Can I use this in an automated pipeline?

Yes, the skill includes a --ci flag for non-interactive use, allowing it to be triggered by other tools or integrated into CI/CD workflows.

Use Case Diagram Generator

Name: Use Case Diagram Generator
Author: ToshikiImagawa

byToshikiImagawa

•

生産性とワークフロー

Generates professional Mermaid-based use case diagrams from business requirements to visualize system actors and functionality.

This skill streamlines the requirement analysis phase of the software development lifecycle by automatically transforming business logic into visual diagrams. By mapping actors to specific use cases within defined system boundaries, it helps developers and stakeholders align on project scope. It supports both interactive exploration and CI/CD integration, ensuring documentation stays synchronized with requirements as part of an AI-driven Specification Driven Development (SDD) workflow.

主な機能

01Customizable Mermaid styling for high-quality visual outputs

02Dual-mode operation: Interactive for refinement and CI for automation

03Project-aware feature lookup for existing PRD documentation

042 GitHub stars

05Automated Mermaid diagram generation from natural language requirements

06Intelligent actor and use case extraction with relationship mapping

ユースケース

01Visualizing user roles and system interactions during initial requirement gathering

02Clarifying complex feature scopes for stakeholder review and architectural alignment

03Automating documentation updates within a CI/CD pipeline using the silent mode

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add toshikiimagawa/ai-sdd-workflow generate-usecase-diagram

For use in Claude.ai and ChatGPT

主な機能

01Customizable Mermaid styling for high-quality visual outputs

02Dual-mode operation: Interactive for refinement and CI for automation

03Project-aware feature lookup for existing PRD documentation

042 GitHub stars

05Automated Mermaid diagram generation from natural language requirements

06Intelligent actor and use case extraction with relationship mapping

ユースケース

01Visualizing user roles and system interactions during initial requirement gathering

02Clarifying complex feature scopes for stakeholder review and architectural alignment

03Automating documentation updates within a CI/CD pipeline using the silent mode

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add toshikiimagawa/ai-sdd-workflow generate-usecase-diagram

For use in Claude.ai and ChatGPT