Codebase Audit Agent Skill

Performs deep, multi-agent codebase audits across tech stacks to uncover hidden bugs, architecture flaws, and security risks.

Context cost
8.8k tokensestimated from the bundle, loaded when it triggers
Bundle
4 files · 35.4 kBtext throughout, nothing executable
Licence
MITthe author’s own terms
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

全面代码库审计 — 自适应并行深度分析(前后端契约、数据完整性、异常处理/安全、架构/技术债、配置/缓存),结构化 findings + 对抗验证 + 基线对比,输出按严重程度排序的统一报告和修复路线图。支持 quick 快速体检模式。Use when user asks to audit, analyze, or review an entire codebase for design issues, find hidden bugs, check architecture health, or asks '全面审查', '代码库审计', '分析设计问题', 'audit codebase', 'health check', '有哪些问题', '快速体检'. Also trigger when user asks to find silent degradation, data flow breakpoints, type mismatches between frontend and backend, or wants to understand technical debt across a project.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

agentsecuritytesting

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md11.4 kB · preview
--- name: codebase-audit ---
6# Codebase Audit — Adaptive Deep Analysis
7
8Comprehensive codebase audit that adapts its agent configuration to the project's tech stack, forces structured findings, adversarially verifies Critical/High findings before they enter the report, diffs against the previous audit's ledger (resolved / still-open / new), and outputs a severity-sorted report plus a phased repair roadmap.
9
10## Core Principles
11
121. **READ-ONLY** — Audit agents must never create, modify, or delete files in the target. Every agent prompt starts with the read-only preamble in references/agent-prompts.md.
132. **Inherit the session model** — Omit the model param on all agents so they inherit the session model (usually the strongest available). Only override *upward* if the session model is clearly weak for cross-file reasoning. Never hardcode a specific model name in this skill.
143. **Depth over breadth** — Fewer agents with broader merged scopes beat many shallow agents. Each agent traces issues across file boundaries.
154. **Adaptive** — Agent count and dimensions vary by stack and mode.
165. **Verified findings** — Critical/High findings must survive an adversarial verify pass. Medium findings pass through but are labeled unverified in the report.
17
18## Operating Contract
19
20- Direct actions: read-only inspection, local dependency audits, report writing under the target, and ledger updates under <target>/.audit/ after the user invokes this skill.
21- Escalate before: editing audited project source files, dependency manifests, .gitignore, CI config, remote issues, PR state, or anything outside the requested audit/report scope.
22- Secret evidence: retain file:line and the surrounding code, but replace credential values with [REDACTED] in findings, reports, and ledger entries; never reproduce the literal. This redacted snippet satisfies the code-evidence requirement.
23- Evidence-backed pushback: challenge "all clear" or "resolved" only with file evidence, dependency-audit output, verifier results, or ledger spot-checks.
24- Feedback loop: promote repeated misses into prompt updates, ledger matching rules, or fixture eval cases rather than leaving them as session-only notes.
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md1,563 words
Files4
LicenceMIT
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈140
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
8,710
on trigger
The instruction body and 3 supporting files, read only when the skill fires.
4.4%
of a 200k window
Ten skills this size would take about 44% of the window before you open a file.
050k100k150k200k context window

8.8k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

4 files, 35.4 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md11.4 kB
  • evals/evals.json2.6 kB
  • references/agent-prompts.md18.5 kB
  • references/stack-patterns.md2.9 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 4 files you can review in full before installing. The MIT licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Codebase Audit · 8.8k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/codebase-audit/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/codebase-audit" ] && { [ ! -e .claude/skills/codebase-audit ] || { mv .claude/skills/codebase-audit "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/codebase-audit" .claude/skills/ && echo "Installed .claude/skills/codebase-audit"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add majiayu000/codebase-audit

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/codebase-audit/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/codebase-audit/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/codebase-audit" ] && { [ ! -e ~/.claude/skills/codebase-audit ] || { mv ~/.claude/skills/codebase-audit "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/codebase-audit" ~/.claude/skills/ && echo "Installed ~/.claude/skills/codebase-audit" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/codebase-audit/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referencemajiayu000/codebase-audit

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

Reviews

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Publisher
Servers2
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