Code Quality

Pragmatic Programmer

Practical software craftsmanship

Apply the timeless software craftsmanship principles from Hunt and Thomas's "The Pragmatic Programmer." This skill equips your AI agent with DRY thinking, orthogonal design, tracer bullets, and pragmatic approaches to estimation, testing, and automation.

The Pragmatic Programmer by Andrew Hunt & David Thomas

The Pragmatic Programmer

by Andrew Hunt & David Thomas

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Install this skill
npx skills add wondelai/skills/pragmatic-programmer --global

This skill is compatible with Claude, Claude Code, Claude Cowork, Codex, Cursor, OpenClaw, Hermes Agent, and other agentskills.io-compatible agents.

Key Concepts

What your agent learns

DRY Principle

Don't Repeat Yourself — every piece of knowledge should have a single, unambiguous representation in the system.

Orthogonality

Design components that are independent and decoupled — changing one shouldn't affect others.

Tracer Bullets

Build a thin end-to-end slice first to validate architecture, then fill in the details incrementally.

Design by Contract

Define clear preconditions, postconditions, and invariants for every module and function.

Rubber Duck Debugging

Explain the problem step by step to find the answer — articulating the issue often reveals the solution.

About the Author

Andrew Hunt & David Thomas

Agile Manifesto co-authors, founders of Pragmatic Bookshelf

Andrew Hunt and David Thomas are pioneering software consultants who co-founded the Pragmatic Bookshelf and helped write the Agile Manifesto. Their book has been a staple of software engineering education for over two decades.

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Example Prompts

Try these with the skill installed

Identify DRY violations across these modules and suggest consolidation using pragmatic-programmer skill

Code review

Design a tracer bullet implementation for this new feature using pragmatic-programmer skill

Architecture

Check this codebase for orthogonality issues and tight coupling using pragmatic-programmer skill

Design review

Apply Design by Contract to define clear interfaces for this service using pragmatic-programmer skill

API design
Related Skills

More in Code Quality

Clean Code
Writing readable, maintainable code
Clean Code — Robert C. Martin
Refactoring
Improving code design through systematic refactoring
Refactoring — Martin Fowler
Software Design
Reducing complexity through thoughtful software design
A Philosophy of Software Design — John Ousterhout
Legacy Code
Safely change untested code: seams and characterization tests
Working Effectively with Legacy Code — Michael C. Feathers
Put it to work

Guides that use this skill

Create · App

How to Create a New App with AI Skills

Read guide Improve · App

How to Improve an Existing App with AI Skills

Read guide Deep dive · Engineering

From Vibe-Coded Prototype to Production-Ready Product

Read guide Deep dive · Engineering

How to Refactor a Codebase Buried in Technical Debt

Read guide Deep dive · Architecture

How to Design the Best Possible Architecture for a New App

Read guide

Install Pragmatic Programmer

Free, open-source, and ready in 30 seconds.

npx skills add wondelai/skills/pragmatic-programmer --global
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MIT Licensed · Works with Claude, Claude Code, Claude Cowork, Codex, Cursor, OpenClaw, Hermes Agent & other agentskills.io agents · No account needed

Prove it

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25 questions · ~8 min · Free

For hands-on developers

AI Developer Scorecard

How production-grade is your AI engineering?

Twenty-five questions across the practices that separate vibe-coding from production-grade engineering. Instant score, per-section breakdown, and a 30/60/90-day playbook.

Score 0–75 · 30/60/90-day playbook Score yourself For CTOs & founders

CTO Scorecard

Is your engineering team ready for AI at scale?

Twenty-five questions on how your org adopts AI — adoption, governance, automation, and ROI. See where you sit on the path from Reactive to Strategic Leader.

Score 0–75 · Reactive → Strategic Leader Score your org