design-core

Guide system design with decomposition protocols and architecture decision trees.

Updated Feb 19, 2026
One-click install
npx skills add https://github.com/kunallimaye/lib-agents --skill design-core
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: design-core
Source: https://github.com/kunallimaye/lib-agents/tree/main/skills/design-core
Command: npx skills add https://github.com/kunallimaye/lib-agents --skill design-core

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides a foundational understanding of system design principles, helping users make better architectural decisions and avoid common pitfalls.

Core Features & Use Cases

  • First-Principles Decomposition: Breaks down complex system design problems into manageable, atomic components.
  • Mental Models & Principles: Offers established frameworks and guiding principles for robust system design.
  • Architecture Decision Trees: Provides guidance on selecting appropriate data stores, communication patterns, and deployment topologies.
  • Design Review Checklist: Equips users with a structured checklist to evaluate the quality of system designs.
  • Anti-Pattern Identification: Highlights common design mistakes and suggests better alternatives.
  • Use Case: When starting a new project, use this Skill to establish a solid architectural foundation by decomposing the problem, understanding trade-offs, and selecting appropriate technologies before diving into implementation.

Quick Start

Decompose the system design problem for a real-time chat application using first principles.

Frequently Asked Questions about design-core

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

FAQPage Schema
How do I decompose a complex system design problem using first principles?▼

First-principles decomposition breaks complex system design problems into manageable, atomic components to establish a solid architectural foundation. This approach helps you understand fundamental trade-offs and select appropriate technologies before implementation.

What are common system design anti-patterns and how do I avoid them?▼

System design anti-patterns are common architectural mistakes that undermine scalability and robustness. Identifying them early through structured design review checklists helps you replace flawed patterns with better, established alternatives.

How do I choose the right data store and communication patterns for scalable architecture?▼

Choosing the right data store and communication patterns for scalable architecture requires using architecture decision trees. These decision frameworks guide you through evaluating trade-offs to select appropriate data stores and communication topologies.

What should be included in a system design review checklist?▼

A system design review checklist should include structural criteria to evaluate architectural quality, decomposition protocols, and anti-pattern identification. It provides a structured framework to validate that your design supports robust and scalable system architectures.

When do I need to establish a system architecture foundation before starting implementation?▼

You need to establish a system architecture foundation before starting implementation when beginning a new project. Applying foundational knowledge and mental models early ensures you make better architectural decisions and avoid common pitfalls.

What mental models help with making better architectural decisions?▼

Mental models that help with architectural decisions include first-principles thinking, evolution stages, and decision frameworks. These established frameworks provide guiding principles for robust system design and evaluating trade-offs.