Cookies

With your permission, we use Google Analytics cookies to measure visits and improve the site. Necessary cookies are always on. You can change your choice or withdraw consent anytime in the footer, under Cookie settings. Cookie Policy

Skip to content
PTEN
Get started

codebase-design

Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-navigable, or when another skill needs th

  • Skills
  • Engineering
  • 16

What it does and how to use it

A skill that teaches Claude Code to do engineering tasks well. It is packaged knowledge the model uses whenever it is relevant.

  1. Install the skill (command above).
  2. In Claude Code, describe what you need - the skill turns on by itself when the context fits.
  3. No commands to memorize: you talk in plain language and the skill does the rest.

Supporting material included: DEEPENING.md, DESIGN-IT-TWICE.md

Install (Claude Code)

mkdir -p .claude/skills/mattpocock-skills__codebase-design && curl -fsSL https://doutorai.pt/data/lib/skills__mattpocock-skills__codebase-design.md -o .claude/skills/mattpocock-skills__codebase-design/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

---
name: codebase-design
description: Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-navigable, or when another skill needs the deep-module vocabulary.
---

# Codebase Design

Design **deep modules**: a lot of behaviour behind a small interface, placed at a clean seam, testable through that interface. Use this language and these principles wherever code is being designed or restructured. The aim is leverage for callers, locality for maintainer

- 🔒 Full content on the Pro plan (€7.99/month) -

Need help with Claude Code?

Ask Dr AI - it explains things simply.

Need a tailor-made solution?

Not sure where to start with AI in your business? Get a free assessment and a tailored plan - no commitment.

Save hours every week with AI, no hassle

Doutor AI gives you 1,859 ready-to-copy AI prompts, by industry and in plain English - plus a complete technical library for those who want to go further.

See plans