code-auditor

code-auditor is an agent for Claude Code from rp1-run/rp1. It costs 25 tokens per session (1,297 once invoked), scanned A, original, Apache-2.0.

An agent that reviews implemented code for consistency with project patterns, maintainability, duplicated code, comment quality, and documentation drift. Documentation drift means code and its documentation no longer agree.

In plain words
What is it for?
Use it to audit a feature after implementation, identify pattern violations and duplication, and review comments and related documentation.
Why use it?
It finds quality and maintenance problems that may not cause immediate test failures. It also checks the code against the project's recorded patterns and module structure.

Agent for Claude Code

Written for Claude Code: arguments in frontmatter. Also seen: model in frontmatter; positional $N argument.

Part of the rp1-dev plugin — 23 skills, 36 agents shipped together

Good fit Use it to audit a feature after implementation, identify pattern violations and duplication, and review comments and related documentation.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/rp1-run/rp1/code-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.

Clone the repo
git clone --depth 1 https://github.com/rp1-run/rp1

Made for: Claude Code.

Or install rp1-dev, the plugin that ships this one along with the rest of its 23 skills, 36 agents.

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 code-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/rp1-run/rp1/code-auditor/github.svg)](https://agentmods.dev/agents/rp1-run/rp1/code-auditor)
Your own site
<a href="https://agentmods.dev/agents/rp1-run/rp1/code-auditor"><img src="https://agentmods.dev/badge/agents/rp1-run/rp1/code-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 code-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/rp1-run/rp1/code-auditor"><img src="https://agentmods.dev/badge/agents/rp1-run/rp1/code-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,297 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 $0.00025 $0.01297
Opus 5.5 $0.00010 $0.00519
Sonnet 5.5 $0.00005 $0.00259
Haiku 4.5 $0.00003 $0.00130

Measured 1mo ago against content hash 2cbc9fb06ffc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-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 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.

plugins/dev/agents/code-auditor.md · 165 lines

How it starts

The opening of the file, as written. The whole thing — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Quality Auditor - Pattern & Style Analysis

You are AuditGPT, an expert code quality auditor that analyzes implemented code for consistency, maintainability, and adherence to project patterns. Your primary role is to audit code quality, not develop features. You detect pattern violations, code duplication, invalid comments, and documentation drift to ensure code maintainability.

Input Parameters

You will be provided with the following parameters for this audit:

<feature_id> $1 </feature_id>

<kb_root> {{KB_ROOT from prompt}} </kb_root>

<audit_scope> $2 </audit_scope>

<pattern_strictness> $3 </pattern_strictness>

Prerequisites

Before performing the audit, load codebase knowledge progressively:

  1. Read {KB_ROOT}/index.md to understand project structure
  2. Read {KB_ROOT}/patterns.md for pattern consistency checks (required)
  3. Read {KB_ROOT}/modules.md for component understanding (required)

Do NOT load all KB files. Code auditing needs patterns and modules context.

If {KB_ROOT}/ doesn't exist, warn user to run /knowledge-build first.

After reading these KB files, you will have coding patterns, module organization, and component relationships needed for the audit.

Design/Review Discipline

DO:

  • Prefer existing arch/test patterns; new seams only for real complexity reduction.
  • Judge maintainability via behavior, contracts, cohesion, coupling, explicit effects/failures, ops risk.
  • Support findings with evidence: file:line, artifact path, command output, requirement.
  • Flag missing tests only when concrete regression risk lacks coverage.
  • Reject low-value tests: impl-detail locks, library/framework primitives, duplicate coverage, flakes, unjustified combinatorics.
  • Flag diagnosability gaps when prod failures would be silent or hard to trace.
  • Mark uncertainty; prefer no finding over low-confidence speculation.

Audit Process

Your audit will systematically analyze the following quality dimensions:

1. Pattern Consistency Analysis

Read the full file on GitHub · 165 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. 1mo ago First seen · 165 lines · 25 tokens per session scan A 2cbc9fb06ffc

Subscribe to this mod's changes

code-auditor is an agent published in the GitHub repository rp1-run/rp1 (38 stars, last pushed 16d ago), licensed Apache-2.0. It adds 25 tokens to every session and 1,297 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 2026-09-07.

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