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How to use Architecture Designer skill in Claude Code for beginners

Cowrie
Cowrie
Dev @ Bswen

Purpose

This post demonstrates how to use the Architecture Designer skill in Claude Code for effective api-architecture development.

Environment

  • Claude Code CLI
  • claude-skills plugin
  • Architecture Designer skill

The Architecture Designer Skill

The Architecture Designer skill helps you make architectural decisions when building systems. It provides guidance on system design, component relationships, and structural patterns.

There are 4 key benefits:

  • architectural guidance: Get help with system design decisions
  • pattern recommendations: Learn appropriate architectural patterns for your use case
  • best practices: Follow proven approaches for api-architecture development
  • problem prevention: Identify potential structural issues early

You will use this skill when making significant architectural choices for your project.

When to Use Architecture Designer

I use this skill in these situations:

When starting a new project and deciding on overall structure When choosing between different architectural patterns (microservices, monolith, serverless) When designing API architecture and service boundaries When planning database schema and data flow When integrating with third-party systems When scaling existing systems

Core Usage Patterns

The skill triggers automatically when you ask architectural questions. Here are common trigger phrases:

"What architecture should I use for..."
"Design the architecture for..."
"How should I structure..."
"What's the best pattern for..."
"Help me decide between monolith and microservices"

Example 1: Designing API Architecture

When I asked Claude to design an e-commerce API architecture, it first invoked the Architecture Designer skill.

Here’s what happened:

I need to design an API architecture for an e-commerce platform with:
- Product catalog
- User authentication
- Order processing
- Payment integration
- Inventory management

The Architecture Designer skill analyzed the requirements and recommended a microservices architecture with these services:

API Gateway
    ↓
├── Auth Service (authentication/authorization)
├── Product Service (catalog management)
├── Order Service (order processing)
├── Payment Service (payment integration)
└── Inventory Service (stock management)

The skill explained that this separation allows:

  • Independent scaling of services
  • Separate development teams per service
  • Fault isolation between services
  • Technology diversity (different services can use different stacks)

Example 2: Monolith vs Microservices Decision

I was building a small internal tool and couldn’t decide between monolith and microservices.

When I asked:

"Should I use a monolith or microservices for a team dashboard with 5 users?"

The Architecture Designer skill recommended a monolithic architecture because:

  • Small user base (5 users)
  • Single development team
  • Low traffic volume
  • Simpler deployment and maintenance
  • Lower operational overhead

The skill showed me that microservices add complexity that wasn’t justified for this use case.

Example 3: Database Architecture

When designing a data-intensive application, I used the Architecture Designer skill to plan the database layer.

I asked:

"How should I structure my database for a real-time analytics platform?"

The skill recommended a hybrid approach:

  • PostgreSQL for transactional data (user accounts, configurations)
  • ClickHouse for analytical data (events, metrics)
  • Redis for caching and real-time data

It also provided guidance on:

  • Data synchronization between stores
  • Read/write patterns for each database
  • Backup and recovery strategies
  • Scaling considerations

Best Practices

DO

  • Use early: Invoke the skill before writing code, not after
  • Be specific: Provide concrete requirements and constraints
  • Ask why: Understand the reasoning behind recommendations
  • Consider trade-offs: Every architectural decision has pros and cons
  • Document decisions: Record why you chose a particular architecture

DON’T

  • Skip planning: Don’t start coding without architectural guidance
  • Copy blindly: Adapt recommendations to your specific context
  • Over-engineer: Avoid complex architectures for simple problems
  • Ignore constraints: Consider team size, budget, and timeline
  • Assume scalability: Build for current needs, not hypothetical future growth

Installation and Setup

If you haven’t installed claude-skills yet:

Terminal window
npm install -g @jeffallan/claude-skills

The Architecture Designer skill is included by default. To verify it’s available:

Terminal window
claude-skills list | grep architect

The Architecture Designer works well with these complementary skills:

  • planner: For detailed implementation plans after architecture is decided
  • security-review: For validating architectural security decisions
  • backend-patterns: For specific backend implementation patterns
  • frontend-patterns: For UI architecture decisions

Summary

In this post, I showed how to use the Architecture Designer skill in Claude Code for api-architecture development. The key point is to invoke this skill early in your project lifecycle, before writing implementation code. This helps you make informed architectural decisions and avoid costly refactoring later.

Final Words + More Resources

My intention with this article was to help others share my knowledge and experience. If you want to contact me, you can contact by email: Email me

Here are also the most important links from this article along with some further resources that will help you in this scope:

Oh, and if you found these resources useful, don’t forget to support me by starring the repo on GitHub!

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