@prd — PRD Generation Skill

What problem does it solve?

This Skill automates the creation and maintenance of Project Requirement Documents (PRDs) and generates diagrams directly from code annotations, ensuring documentation stays synchronized with the codebase.

Core Features & Use Cases

• Automated PRD Scaffolding: Detects project type (service, library, CLI) and generates a PRD with appropriate sections.
• Diagram Generation: Creates Mermaid and PlantUML diagrams from inline code annotations (@prd_flow, @prd_step).
• Validation: Enforces section limits and frontmatter completeness.
• Update Mode: Regenerates diagrams and updates PRD frontmatter based on code changes.
• Use Case: When starting a new service, use @prd "my-new-service" to quickly generate a structured PRD. Later, as you add Python functions with @prd_step annotations, run @prd "my-new-service" --update to automatically update sequence diagrams in your PRD.

Quick Start

Use the prd skill to generate a new PRD for a project named 'hw-checker'.