eval-audit

eval-audit is a skill for Claude Code from hamelsmu/evals-skills. It costs 85 tokens per session (2,046 once invoked), scanned A, original, MIT.

A guide for checking whether an evaluation system for a large language model produces trustworthy results. It examines the data, scoring methods, and reports used to judge the model.

In plain words
What is it for?
Use it when taking over an existing evaluation setup, investigating whether its results can be trusted, or checking a project with no evaluation process.
Why use it?
It surfaces missing error analysis, unreliable AI judges, and metrics that look good without reflecting real product quality.

Skill for Claude Code

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

Part of the evals-skills plugin — 7 skills shipped together

Good fit Use it when taking over an existing evaluation setup, investigating whether its results can be trusted, or checking a project with no evaluation process.

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

Made for: Claude Code.

Or install evals-skills, 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 eval-audit

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/hamelsmu/evals-skills/eval-audit"><img src="https://agentmods.dev/badge/skills/hamelsmu/evals-skills/eval-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 85 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,046 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
  • Socket pass 18 Mar 2026
  • Snyk pass 3 Mar 2026
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 $0.00085 $0.02046
Opus 5 $0.00043 $0.01023
Sonnet 5 $0.00017 $0.00409
Haiku 4.5 $0.00009 $0.00205

Measured 9d ago against content hash f02bc95ff3da, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

eval-audit 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 9d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/eval-audit/SKILL.md · 184 lines

How it starts

The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Eval Audit

Inspect an LLM eval pipeline and produce a prioritized list of problems with concrete next steps.

Overview

  1. Gather eval artifacts: traces, evaluator configs, judge prompts, labeled data, metrics dashboards
  2. Run diagnostic checks across six areas
  3. Produce a findings report ordered by impact, with each finding linking to a fix

Prerequisites

Access to eval artifacts (traces, evaluator configs, judge prompts, labeled data) via an observability MCP server or local files. If none exist, skip to "No Eval Infrastructure."

Connecting to Eval Infrastructure

Check whether the user has an observability MCP server connected (Phoenix, Braintrust, LangSmith, Truesight or similar). If available, use it to pull traces, evaluator definitions, and experiment results. If not, ask for local files: CSVs, JSON trace exports, notebooks, or evaluation scripts.

Diagnostic Checks

Work through each area below. Inspect available artifacts, determine whether the problem exists, and record a finding if it does.

Prioritize findings by impact on the user's product. Present the most impactful findings first.

1. Error Analysis

Check: Has the user done systematic error analysis on real or synthetic traces?

Look for: labeled trace datasets, failure category definitions, notes from trace review. If evaluators exist but no documented failure categories, error analysis was likely skipped.

Finding if missing: Evaluators built without error analysis measure generic qualities ("helpfulness", "coherence") instead of actual failure modes. Start with error-analysis, or generate-synthetic-data first if no traces exist.

See: Your AI Product Needs Evals, LLM Evals FAQ

Check: Were failure categories brainstormed or observed?

Generic labels borrowed from research ("hallucination score", "toxicity", "coherence") suggest brainstorming. Application-grounded categories ("missing query constraints", "wrong client tone", "fabricated property features") suggest observation.

Read the full file on GitHub · 184 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. 9d ago First seen · 184 lines · 85 tokens per session scan A f02bc95ff3da

Subscribe to this mod's changes

eval-audit is a skill published in the GitHub repository hamelsmu/evals-skills (1,664 stars, last pushed 23d ago), licensed MIT. It adds 85 tokens to every session and 2,046 once invoked, about $0.0004 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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