ln-54-codebase-auditor

ln-54-codebase-auditor is a skill for Claude Code from levnikolaevich/claude-code-skills. It costs 32 tokens per session (2,888 once invoked), scanned A, original, MIT.

A broad, read-only review skill for production code. It looks across the codebase for concrete security, delivery, failure, and maintenance risks rather than reviewing one change.

In plain words
What is it for?
It is for assessing overall codebase health, security risks, maintainability, and operational failure risks.
Why use it?
It helps identify cross-cutting problems that a narrow code review or a single specialist review may miss.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the quality-assurance-suite plugin — 7 skills shipped together

Good fit It is for assessing overall codebase health, security risks, maintainability, and operational failure risks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/levnikolaevich/claude-code-skills/ln-54-codebase-auditor
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 levnikolaevich/claude-code-skills --skill ln-54-codebase-auditor
Clone the repo
git clone --depth 1 https://github.com/levnikolaevich/claude-code-skills

Made for: Claude Code.

Or install quality-assurance-suite, the plugin that ships this one along with the rest of its 7 skills.

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 ln-54-codebase-auditor

README.md
[![agentmods](https://agentmods.dev/badge/skills/levnikolaevich/claude-code-skills/ln-54-codebase-auditor/github.svg)](https://agentmods.dev/skills/levnikolaevich/claude-code-skills/ln-54-codebase-auditor)
Your own site
<a href="https://agentmods.dev/skills/levnikolaevich/claude-code-skills/ln-54-codebase-auditor"><img src="https://agentmods.dev/badge/skills/levnikolaevich/claude-code-skills/ln-54-codebase-auditor/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 ln-54-codebase-auditor

Your own site · 80×15
<a href="https://agentmods.dev/skills/levnikolaevich/claude-code-skills/ln-54-codebase-auditor"><img src="https://agentmods.dev/badge/skills/levnikolaevich/claude-code-skills/ln-54-codebase-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,888 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 $0.00032 $0.02888
Opus 5.5 $0.00013 $0.01155
Sonnet 5.5 $0.00006 $0.00578
Haiku 4.5 $0.00003 $0.00289

Measured 7d ago against content hash 4e872d9a8af5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ln-54-codebase-auditor 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 7d 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.

plugins/quality-assurance-suite/skills/ln-54-codebase-auditor/SKILL.md · 118 lines

How it starts

The opening of the file, as written. The whole thing — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Codebase Auditor

Goal: Perform a broad, read-only production-code health audit. Find concrete cross-cutting failure, security, delivery, and maintenance risks without turning detector matches or personal style preferences into findings. Do not substitute for documentation trust, test-portfolio, whole-architecture, or persistence-specific review.

Execution contract: The checklist defines completion. Track each item internally as PENDING, PROVEN with evidence, CLEARED with evidence its condition is absent, or UNPROVEN with a gap; reading, delegation, tool failure, a zero exit status, or a self-reported success is not proof; only the observed outcome is. Reconcile after each section. Before returning, resolve all PENDING, count only PROVEN and CLEARED, and apply verdict and approval rules to every gap. Preserve intent, scope, and existing authorization. Continue authorized work; ask only for consequential unresolved choices or required external approval. When no one can answer during the run, state the exact question and apply the skill's verdict for the remaining gap instead of waiting or guessing. Scale depth to material risk without skipping checks. Preserve dependency and safety order; otherwise choose an appropriate verification method. Accept equivalent user or repository evidence; no other skill, named artifact, or complete lifecycle is required. Preserve source requirement and decision IDs. Bind reused evidence to relevant source versions, dirty changes, configuration, and environment; invalidate only affected claims. On continuation, reconcile task, authorization, current state, and unresolved evidence. For long work, return a compact continuation record or update an already authorized artifact; read-only skills do not persist it. Distinguish artifact readiness, verified behavior, and external-action authority. Prepare authorized work before required approval. If blocked by an instruction, cite its exact source and unresolved boundary; do not invent approval gates from caution.

Read the full file on GitHub · 118 lines

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. 7d ago Changed 4e872d9a8af5
  2. 23d ago Changed · -1 lines 042c85f4fa75
  3. 27d ago First seen · 119 lines · 32 tokens per session scan A 26936443b559

Subscribe to this mod's changes

ln-54-codebase-auditor is a skill published in the GitHub repository levnikolaevich/claude-code-skills (573 stars, last pushed 4d ago), licensed MIT. It adds 32 tokens to every session and 2,888 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 2026-09-13.

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