---
title: "deepen - make modules deep - Air Market"
description: "You have spare usage left over and a codebase with modules that feel thin. This looks for the shallowest ones, researches a deeper design, and suggests refactors that narrow interfaces and hide decis…"
canonical: "https://airmarket.ai/app/deepen"
---

[Air Market](/) / [Developer Tools](/category/devtools) / deepen - make modules deep

Skill by [Julius Brussee](/@juliusbrussee)

# deepen - make modules deep

Spend leftover budget making thin modules carry their weight

## What this does

You have spare usage left over and a codebase with modules that feel thin. This looks for the shallowest ones, researches a deeper design, and suggests refactors that narrow interfaces and hide decisions. Behavior stays the same and tests pass on both sides. Nothing is rewritten without you seeing it first.

### Top 3 things it does for you

- Find the shallowest modules the spec touches
- Get a refactor proposed instead of applied
- Shrink an interface that leaks too much

## Information

**deepen - make modules deep at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Julius Brussee](/@juliusbrussee) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 4 KB |
| Licence | MIT |
| Repository | [JuliusBrussee/cavekit](https://github.com/JuliusBrussee/cavekit/tree/c322f0bb6db82163041930467f3ce32754d42827/skills/deepen) |
| GitHub stars | 1,142 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of deepen - make modules deep and flagged nothing. AIR's verdict: **safe**.

**What deepen - make modules deep's check was run against**

|  |  |
| --- | --- |
| Commit | c322f0bb6db82163041930467f3ce32754d42827 |
| Content hash | 0025d2322083ba74e61166d1749fe88b084f763ccaf960fb9d35388b910fcc09 |
| Files read | [Browse the files at this exact commit](https://github.com/JuliusBrussee/cavekit/blob/c322f0bb6db82163041930467f3ce32754d42827/skills/deepen/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for deepen - make modules deep](/security/deepen)

## About deepen - make modules deep

This is an optional pass for when you have usage to drain and would rather put it into design than leave it on the table. It looks over the code the spec touches, finds the shallowest modules, and researches a deeper design for them.

What comes back is proposals: refactors that shrink interfaces and hide decisions, with behavior held constant and tests green before and after. It proposes spec edits rather than making silent rewrites.

Say "deepen this", "improve the design", "this module feels shallow", or "pull complexity down" to start it. Where the codebase-design skill is present, it borrows that skill's deep-module vocabulary.

## What's inside

- SKILL.md - instructions

## Questions

### Is deepen - make modules deep safe to install?

AIR scanned this exact version of deepen - make modules deep and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit c322f0bb6db8, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/deepen.

### How do I install deepen - make modules deep?

Open https://airmarket.ai/app/deepen on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/JuliusBrussee/cavekit/tree/c322f0bb6db82163041930467f3ce32754d42827/skills/deepen. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Julius Brussee](/@juliusbrussee)

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Canonical URL: <https://airmarket.ai/app/deepen>