dead-code

dead-code is a skill for Claude Code from berkcangumusisik/claude-code-practices. It costs 18 tokens per session (263 once invoked), scanned A, original, MIT.

A codebase analysis tool that looks for functions, variables, exports, and dependencies that are no longer used.

In plain words
What is it for?
Use it to find confirmed unused items, separate uncertain cases, and identify code that may be safe to remove after confirmation.
Why use it?
Unused code makes projects harder to understand and maintain, but deleting code without checking can cause failures.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to find confirmed unused items, separate uncertain cases, and identify code that may be safe to remove after confirmation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/berkcangumusisik/claude-code-practices/dead-code
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.

Any agent
npx skills add berkcangumusisik/claude-code-practices --skill dead-code
Clone the repo
git clone --depth 1 https://github.com/berkcangumusisik/claude-code-practices

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for dead-code

README.md
[![agentmods](https://agentmods.dev/badge/skills/berkcangumusisik/claude-code-practices/dead-code/github.svg)](https://agentmods.dev/skills/berkcangumusisik/claude-code-practices/dead-code)
Your own site
<a href="https://agentmods.dev/skills/berkcangumusisik/claude-code-practices/dead-code"><img src="https://agentmods.dev/badge/skills/berkcangumusisik/claude-code-practices/dead-code/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for dead-code

Your own site · 80×15
<a href="https://agentmods.dev/skills/berkcangumusisik/claude-code-practices/dead-code"><img src="https://agentmods.dev/badge/skills/berkcangumusisik/claude-code-practices/dead-code.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 263 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 5.1 $0.00018 $0.00263
Opus 5.5 $0.00007 $0.00105
Sonnet 5.5 $0.00004 $0.00053
Haiku 4.5 $0.00002 $0.00026

Measured 1mo ago against content hash dc288a9033e5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo ago.

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.

skills/dead-code/SKILL.md · 35 lines

What it actually says

Dead Code Analysis

  1. Find unused exports (TypeScript/JS):
npx ts-prune 2>/dev/null || npx unimported 2>/dev/null || echo "Running manual search"
  1. Manual search for likely dead code:
# Exported but never imported
grep -r "^export " src/ --include="*.ts" -l | head -20

# Functions defined but never called
grep -r "^function \|^const .* = (" src/ --include="*.ts" | head -30
  1. For each candidate, verify by searching for all usages across the codebase.

  2. Report categories:

    • Safe to delete: confirmed zero usages
    • Probably dead: only used in tests or commented-out code
    • Keep: used dynamically or via reflection
  3. For safe-to-delete items: ask confirmation, then remove.

Never delete code you're not certain about - mark uncertain items with // TODO: verify unused.

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. 1mo ago First seen · 35 lines · 18 tokens per session scan A dc288a9033e5

Subscribe to this mod's changes

dead-code is a skill published in the GitHub repository berkcangumusisik/claude-code-practices (11 stars, last pushed 6mo ago), licensed MIT. It adds 18 tokens to every session and 263 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.

Related

Other skills, from other repositories

monitoring-observability

OpenTelemetry, structured logging, distributed tracing, alerting, and dashboards. Use when instrumenting services, designing logs/traces/metrics, defining SLOs and alerts, or debugging production behavior from telemetry.

travisjneuman/.claude · 48 tokens

debug-systematic

Systematic 4-phase debugging methodology for complex, intermittent, or mysterious issues. Use when investigating bugs, race conditions, or unexplained failures.

travisjneuman/.claude · 33 tokens

review-rfc

Review an implemented RFC in a fresh context against its acceptance criteria, RULES.md and the test plan, and save the review to reviews/.

nurettincoban/ai-prd-workflow · 32 tokens

agent-cpp-expert

Specialist subagent: C and C++ development, modern C++ (C++17/20/23), CMake, systems programming, and memory management specialist. Use when writing C/C++ code, debugging memory issues, or building systems-level software. Trigger phrases: C++, C language, CMake, modern C++, systems programming, memory management…

travisjneuman/.claude · 88 tokens

devharness

Drive and debug a running app via the devharness MCP server - launch or attach to Chrome and Node.js, set breakpoints and logpoints, inspect call stacks and variables, watch console and network, manage dev servers, replay any earlier tool call by its history index, and record reproduction sequences that verify a fix.…

InDate/devharness · 147 tokens

diag

Read-only root-cause diagnosis for a symptom, bug, failure, or unexpected behavior. Establishes the mechanism at file:line and reads up the facts instead of guessing, before any fix is attempted. Produces a diagnosis report; the fix is always a separate step gated by an explicit GO. Use when something is broken…

Marcel-Bich/marcel-bich-claude-marketplace · 118 tokens