rag-auditor

rag-auditor is a skill for Claude Code from Mathews-Tom/armory. It costs 76 tokens per session (1,966 once invoked), scanned A, original, MIT.

A review tool for RAG systems, which retrieve relevant documents before an AI model writes an answer. It measures both document retrieval and whether the generated answer stays supported by those documents.

In plain words
What is it for?
Use it to measure retrieval precision, recall, and ranking, then assess groundedness, completeness, and hallucinations in a RAG pipeline.
Why use it?
It helps locate whether poor answers come from finding the wrong information, splitting or embedding documents badly, or generating unsupported claims. It replaces vague quality judgments with defined checks and test questions.

Skill for Claude Code

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

Part of the armory plugin — 98 skills shipped together

Good fit Use it to measure retrieval precision, recall, and ranking, then assess groundedness, completeness, and hallucinations in a RAG pipeline.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mathews-tom/armory/rag-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 Mathews-Tom/armory --skill rag-auditor
Clone the repo
git clone --depth 1 https://github.com/Mathews-Tom/armory

Made for: Claude Code.

Or install armory, the plugin that ships this one along with the rest of its 98 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 rag-auditor

README.md
[![agentmods](https://agentmods.dev/badge/skills/mathews-tom/armory/rag-auditor/github.svg)](https://agentmods.dev/skills/mathews-tom/armory/rag-auditor)
Your own site
<a href="https://agentmods.dev/skills/mathews-tom/armory/rag-auditor"><img src="https://agentmods.dev/badge/skills/mathews-tom/armory/rag-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 rag-auditor

Your own site · 80×15
<a href="https://agentmods.dev/skills/mathews-tom/armory/rag-auditor"><img src="https://agentmods.dev/badge/skills/mathews-tom/armory/rag-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,966 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Prompt Injection · line 177
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
How audits are shown
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 $0.00076 $0.01966
Opus 5.5 $0.00030 $0.00786
Sonnet 5.5 $0.00015 $0.00393
Haiku 4.5 $0.00008 $0.00197

Measured 1mo ago against content hash 633f6f5730a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rag-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.

skills/rag-auditor/SKILL.md · 191 lines

How it starts

The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.

RAG Auditor

Systematic RAG pipeline evaluation across the full retrieval-generation chain: designs evaluation query sets, measures retrieval metrics (Precision@K, Recall@K, MRR), evaluates generation quality (groundedness, completeness, hallucination rate), diagnoses component-level failures, and recommends targeted improvements.

Reference Files

File Contents Load When
references/retrieval-metrics.md Precision@K, Recall@K, MRR, NDCG definitions and calculation Always
references/generation-metrics.md Groundedness, completeness, hallucination detection methods Generation evaluation needed
references/failure-taxonomy.md RAG failure categories: retrieval, generation, chunking, embedding Failure diagnosis needed
references/diagnostic-queries.md Designing evaluation query sets, known-answer questions, difficulty levels Evaluation setup

Prerequisites

  • Access to the RAG pipeline (or its outputs for post-hoc evaluation)
  • A set of test queries with known-correct answers
  • Understanding of the pipeline components (embedding model, retriever, generator)

Workflow

Phase 1: Pipeline Inventory

Document the RAG pipeline configuration:

  1. Document source — What documents are indexed? Format, count, size.
  2. Chunking — Strategy (fixed-size, semantic, paragraph), chunk size, overlap.
  3. Embedding — Model name and version, dimensionality.
  4. Vector store — Type (FAISS, Pinecone, Chroma, pgvector), index type.
  5. Retrieval — Method (similarity, hybrid, reranking), top-K parameter.
  6. Generation — Model, prompt template, context window usage.

Phase 2: Design Evaluation Queries

Read the full file on GitHub · 191 lines

Files

What ships with it

5 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. 1mo ago First seen · 191 lines · 76 tokens per session scan A 633f6f5730a2

Subscribe to this mod's changes

rag-auditor is a skill published in the GitHub repository Mathews-Tom/armory (337 stars, last pushed 2d ago), licensed MIT. It adds 76 tokens to every session and 1,966 once invoked, about $0.0003 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 2026-09-05.

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