codebase-design SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 5 indexed copies. Same content hash, so the same checks give both the same grade.

codebase-design from ethanyoq/skill-hub is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add ethanyoq/skill-hub/codebase-design@git:20260912.84c6c93

Pins git:20260912.84c6c93 in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

ethanyoq/skill-hub

Path

archives/user-installed-skills/codebase-design/b8ba6e8c0bae45b1/codebase-design/SKILL.md

Versions recorded

1

Latest version

git:20260912.84c6c93, committed Sep 12, 2026

Size

6,488 bytes

Repository stars

11

License

MIT

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.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# 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 maintainers, and testability for everyone.

## Glossary

Use these terms exactly — don't substitute "component," "service," "API," or "boundary." Consistent language is the whole point.

**Module** — anything with an interface and an implementation. Deliberately scale-agnostic: a function, class, package, or tier-spanning slice. _Avoid_: unit, component, service.

**Interface** — everything a caller must know to use the module correctly: the type signature, but also invariants, ordering constraints, error modes, required configuration, and performance characteristics. _Avoid_: API, signature (too narrow — they refer only to the type-level surface).
…

Read the whole file at its exact version.

How to install

mdr add ethanyoq/skill-hub/codebase-design@sha256:a8d50abac5a4018f

[![mdr](https://markdownregistry.com/badge/art_hzfylauu2iptns4p.svg)](https://markdownregistry.com/a/art_hzfylauu2iptns4p)

Versions

The registry has recorded 1 version of this file, committed on Sep 12, 2026.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_hzfylauu2iptns4p
GET https://markdownregistry.com/api/v1/resolve?ref=ethanyoq/skill-hub/codebase-design
GET https://markdownregistry.com/api/v1/blob/a8d50abac5a4018f60e1d911d4b6f4e36454ca14d6c390c0695a578c7de65dad

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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