evaluate-rag

evaluate-rag is a skill for Claude Code, Codex from ai-evals-course/evals-skills. It costs 52 tokens per session (1,711 once invoked), scanned A, original, no licence file.

A skill for evaluating RAG systems. RAG, or retrieval-augmented generation, is a setup where an AI retrieves information before generating an answer.

In plain words
What is it for?
Measuring retrieval and answer quality, checking faithfulness and relevance, creating test questions, and improving how documents are split into chunks.
Why use it?
It helps identify whether the system retrieves the right information and produces answers that are relevant and supported by that information.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the evals plugin — 8 skills shipped together

Good fit Measuring retrieval and answer quality, checking faithfulness and relevance, creating test questions, and improving how documents are split into chunks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ai-evals-course/evals-skills/evaluate-rag
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 ai-evals-course/evals-skills --skill evaluate-rag
Clone the repo
git clone --depth 1 https://github.com/ai-evals-course/evals-skills

Made for: Claude Code, Codex.

Or install evals, the plugin that ships this one along with the rest of its 8 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 evaluate-rag

README.md
[![agentmods](https://agentmods.dev/badge/skills/ai-evals-course/evals-skills/evaluate-rag/github.svg)](https://agentmods.dev/skills/ai-evals-course/evals-skills/evaluate-rag)
Your own site
<a href="https://agentmods.dev/skills/ai-evals-course/evals-skills/evaluate-rag"><img src="https://agentmods.dev/badge/skills/ai-evals-course/evals-skills/evaluate-rag/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 evaluate-rag

Your own site · 80×15
<a href="https://agentmods.dev/skills/ai-evals-course/evals-skills/evaluate-rag"><img src="https://agentmods.dev/badge/skills/ai-evals-course/evals-skills/evaluate-rag.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,711 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 unknown 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 $0.00052 $0.01711
Opus 5 $0.00026 $0.00856
Sonnet 5 $0.00010 $0.00342
Haiku 4.5 $0.00005 $0.00171

Measured 10d ago against content hash e22a7bff31a7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

evaluate-rag 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 10d 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/evaluate-rag/SKILL.md · 178 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

1 file 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. 10d ago First seen · 178 lines · 52 tokens per session scan A e22a7bff31a7

Subscribe to this mod's changes

evaluate-rag is a skill published in the GitHub repository ai-evals-course/evals-skills (561 stars, last pushed 9d ago), with no licence file. It adds 52 tokens to every session and 1,711 once invoked, about $0.0003 per session on Opus 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 2026-08-30.

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