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codebase-design

Use when designing or improving a module interface, choosing a seam, reducing shallow modules, making code easier to test, or reviewing architecture for…

Skill by tensology

IndexedMIT★ 17
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

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About

Use when designing or improving a module interface, choosing a seam, reducing shallow modules, making code easier to test, or reviewing architecture for locality, leverage, adapters, and deep-module design.

Use cases: design, testing

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
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Install scripts
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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/codebase-design

What's inside

Skill name
codebase-design
Description
Use when designing or improving a module interface, choosing a seam, reducing shallow modules, making code easier to test, or reviewing architecture for locality, leverage, adapters, and deep-module design.
License
MIT
Instructions
24 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# Codebase Design

Use this vocabulary when shaping code so Decisions workflows and future agents talk about architecture consistently.

## Vocabulary

- **Module:** anything with an interface and implementation: function, class, package, or vertical slice.
- **Interface:** everything a caller must know: type shape, invariants, ordering, errors, config, and performance.
- **Implementation:** what sits behind the interface.
- **Depth:** how much behavior sits behind a small interface.
- **Seam:** where behavior can vary without editing the caller.
- **Adapter:** a concrete implementation at a seam.
- **Leverage:** capability gained by callers.
- **Locality:** change and verification concentrated in one place.

## Rules

- Prefer deep modules: small interface, rich implementation.
- Use the deletion test: if removing the module only moves complexity, it was shallow.
- Tests should cross the same interface callers use.
- One adapter means a hypothetical seam. Two adapters means a real seam.
- In Decisions tickets, name modules with project domain terms and record durable decisions in project docs or workflow memory.

From tensology/decisionsai, MIT.

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Signals

Stars
17
Forks
2
Open issues
0
Last commit (this folder)
Oct 2, 2026 (29 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
Repository
github.com/tensology/decisionsai
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

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codebase-design skill. Agent Mart. https://agentmart.dev/skills/tensology-codebase-design (last updated 2026-10-24)