agentmods.dev

dead_code

A project scan for code that is no longer used, such as unused imports, functions, classes, or branches.

In plain words
What is it for?
Use it to identify removable code and review whether old paths or definitions are still needed.
Why use it?
It helps find code that adds maintenance work without contributing to the program.

Skill for Claude CodeCodex

46 4d ago A scan 19 tokens GPL-3.0
View the source file Anantys-oss/koan
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/anantys-oss/koan/dead_code
Any agent
npx skills add Anantys-oss/koan --skill dead_code
Clone the repo
git clone --depth 1 https://github.com/Anantys-oss/koan

Made for: Claude Code, Codex.

Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 101 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00019 $0.00101
Opus 5 $0.00010 $0.00051
Sonnet 5 $0.00004 $0.00020
Haiku 4.5 $0.00002 $0.00010

Measured 2d ago against content hash 4d7713fc73e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dead_code scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (dead_code_runner.py, handler.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

koan/skills/core/dead_code/SKILL.md · 16 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 16 lines · 19 tokens per session scan A 4d7713fc73e4

Subscribe to this mod's changes

dead_code is a skill published in the GitHub repository Anantys-oss/koan (46 stars, last pushed 4d ago), licensed GPL-3.0. It adds 19 tokens to every session and 101 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Debuggingbotclaudefixergithubissues
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