Plugin

Code Cleanup

Comprehensive codebase cleanup across 11 quality dimensions with confidence scoring and build verification gates

Type: Plugin
Repository: jeremylongshore/tons-of-skills-marketplace
GitHub stars: 2.8k
License: MIT
Repo last updated: Sep 27, 2026
Source file: plugins/testing/code-cleanup/.claude-plugin/plugin.json
Version: 1.7.0
Author: Jeremy Longshore

What Code Cleanup is

Code Cleanup is a plugin published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”

A plugin is a package that bundles skills, slash commands, subagents, hooks, and MCP connectors so they install together. Plugins are plain files with a manifest at .claude-plugin/plugin.json, and they work in both Claude Code and Claude Cowork.

Installing Code Cleanup adds everything it ships in one step. Connectors inside a plugin still need to be connected separately, and hooks and subagents only run in Cowork and Claude Code, not in regular chat.

How to install Code Cleanup

Claude Code

Add the repository as a plugin marketplace: claude plugin marketplace add jeremylongshore/tons-of-skills-marketplace
Install the plugin: claude plugin install code-cleanup@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json.
Restart the session if the new skills or commands don't appear straight away.

Claude Cowork

Open Customize → Plugins and choose Add marketplace.
Enter jeremylongshore/tons-of-skills-marketplace (the owner/repo shorthand works for GitHub).
Find Code Cleanup in the list, click Install, then connect any connectors it needs from its Connectors tab.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from plugins/testing/code-cleanup/.claude-plugin/plugin.json, shared under the repository's MIT license. Read the full file on GitHub.

Comprehensive codebase cleanup across 11 quality dimensions with confidence scoring, build verification gates, and specialized agents.

Born from a real cleanup session — 25,000 lines removed, 4 bugs caught — packaged into a reusable Claude Code plugin.

Quick Start

# Install
claude /plugin marketplace add jeremylongshore/claude-code-plugins

# Run full cleanup
/cleanup

# Target specific dimensions
/cleanup --dimensions dead,types,security

# Scope to directory
/cleanup src/api/

# Changed files only
/cleanup --changed

The 11 Dimensions

Ordered by risk level (LOW → HIGH):

Safety First

Never auto-applies high-risk changes — always flags for review
Confidence scoring on every finding (HIGH/MEDIUM/LOW)
Build verification gate after each auto-applied dimension
One-command revert if anything breaks
Clean git state required before starting

Agents

11 specialized agents, one per dimension:

dead-code-hunter — finds unreachable and unused code
slop-remover — identifies AI-generated comment noise
weak-type-eliminator — strengthens type annotations
security-scanner — flags secrets, injection vectors, weak crypto
legacy-code-remover — modernizes deprecated patterns
type-consolidator — merges duplicate type definitions
defensive-code-cleaner — removes unnecessary guards
performance-optimizer — spots N+1 queries, blocking I/O, bloat
dry-deduplicator — detects copy-paste code blocks
async-pattern-fixer — catches floating promises and race conditions
circular-dep-untangler — maps and resolves module cycles

Language Support

Primary: TypeScript, JavaScript, Python Secondary: Go, Rust (via grep patterns) Tool integrations: knip, madge, ruff, jscpd, dependency-cruiser, bandit, vulture

How It Works

Safety checkpoint — verify clean git state, green tests, record baseline
Scope determination — full codebase, directory, or changed files
Dimensional scan — each dimension scans with tools + grep patterns
Confidence scoring — HIGH (auto-apply), MEDIUM (flag with fix), LOW (flag only)
Build verification — type check + tests after each auto-applied dimension
Report generation — summary table, applied changes, flagged items

License

MIT

Author

Jeremy Longshore — Intent Solutions

Contributors

Jeremy Longshore (@jeremylongshore)

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Code Cleanup?

Code Cleanup is a plugin for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Comprehensive codebase cleanup across 11 quality dimensions with confidence scoring and build verification gates

How do I install Code Cleanup in Claude Code?

Add the repository as a plugin marketplace: claude plugin marketplace add jeremylongshore/tons-of-skills-marketplace Install the plugin: claude plugin install code-cleanup@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json. Restart the session if the new skills or commands don't appear straight away.

Can I use Code Cleanup in Claude Cowork?

Open Customize → Plugins and choose Add marketplace. Enter jeremylongshore/tons-of-skills-marketplace (the owner/repo shorthand works for GitHub). Find Code Cleanup in the list, click Install, then connect any connectors it needs from its Connectors tab.

Is Code Cleanup safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.