design-doc

Generate a structural design document defining module boundaries and contracts.

1|Updated Apr 30, 2026
One-click install
npx skills add https://github.com/taniwhaai/skills --skill design-doc-taniwhaai
Or copy as Structured Prompt for Agent
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Skill: design-doc
Source: https://github.com/taniwhaai/skills/tree/main/skills/design-doc
Command: npx skills add https://github.com/taniwhaai/skills --skill design-doc-taniwhaai

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps in producing a structural design document for systems before coding, reducing complexity and ensuring clarity in the development process.

Core Features & Use Cases

  • Systematic Design Commitment: Forges a commitment to the shape of a system before coding, with a focus on module boundaries, contracts, and data shapes.
  • Pre-Coding Analysis: Triggered when discussing new features, services, or codebases, to avoid sprawl and ensure a clear development path.
  • Audit and Raising Issues: Identifies under-specification in prompts, asking clarifying questions to ensure a complete design.

Quick Start

Start the design-doc skill by initiating it in the conversation when planning a new feature or system design.

Frequently Asked Questions about design-doc

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a system design document before coding to define module boundaries?

System design documents clarify module boundaries and contracts before coding, reducing development complexity. This pre-coding analysis prevents sprawl and ensures a clear development path when planning new features or services.

Why does my system architecture sprawl when I start coding without a design document?

Your system architecture sprawls without a design document because module boundaries and data contracts remain undefined. Generating a pre-coding structural commitment clarifies the system shape and prevents uncontrolled complexity during implementation.

Can I use this pre-coding system design approach for complex system specifications?

Yes, this pre-coding system design approach handles complex system specifications. It audits under-specified prompts by asking clarifying questions, ensuring your architectural design captures complete module contracts and data shapes.

Does the generated design document work with any programming language?

Yes, the generated design document works with any programming language because it utilizes language-neutral terminology for system architecture specifications. This ensures compatibility across different tech stacks during your pre-coding analysis.

What is the best way to define data contracts and module boundaries for a new service?

The best way to define data contracts and module boundaries is generating a comprehensive design document before implementation. This pre-coding analysis identifies under-specification early and asks clarifying questions to ensure complete system specifications.

When do I need to generate a design document for system architecture?

You need to generate a design document for system architecture when discussing new features, services, or codebases. This pre-coding step avoids sprawl and ensures clarity in module boundaries and contracts before development starts.