eval-auditor

eval-auditor is an agent for Claude Code from sliamh11/Deus. It costs 43 tokens per session (870 once invoked), scanned A, original, MIT.

An audit of an evaluation such as a benchmark, A/B test, or model comparison. It checks whether the test design, samples, scoring, judges, and baselines support the conclusion being drawn.

In plain words
What is it for?
Reviewing model comparisons, checking matched sampling settings, validating metrics and thresholds, detecting scope leakage, assessing judge reliability, and testing whether baselines are fair.
Why use it?
It helps catch flaws that can make one system appear better for reasons unrelated to its actual quality. This includes mismatched test settings, data leakage, unreliable judging, and scores that do not measure the decision being made.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Good fit Reviewing model comparisons, checking matched sampling settings, validating metrics and thresholds, detecting scope leakage, assessing judge reliability, and testing whether baselines are fair.

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Install with agentmods
npx agentmods add agents/sliamh11/deus/eval-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/sliamh11/Deus

Made for: Claude Code.

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-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/sliamh11/deus/eval-auditor/github.svg)](https://agentmods.dev/agents/sliamh11/deus/eval-auditor)
Your own site
<a href="https://agentmods.dev/agents/sliamh11/deus/eval-auditor"><img src="https://agentmods.dev/badge/agents/sliamh11/deus/eval-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 eval-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/sliamh11/deus/eval-auditor"><img src="https://agentmods.dev/badge/agents/sliamh11/deus/eval-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 870 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 $0.00043 $0.00870
Opus 5.5 $0.00017 $0.00348
Sonnet 5.5 $0.00009 $0.00174
Haiku 4.5 $0.00004 $0.00087

Measured 1mo ago against content hash 2a9fc3ddd0d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

eval-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.

.claude/agents/eval-auditor.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role

Receive a description of an evaluation setup and systematically audit it for methodology errors that could produce misleading results. Prioritize errors that would cause a qualitatively wrong conclusion (false ranking, overfitted metric) over errors that only affect precision.

Methodology

  1. Map the evaluation structure -- Identify: what is being compared, what metric is used, how the metric is computed, what data is used, and what conclusion is expected. Reconstruct this from the input; request only genuinely missing elements.

  2. Check sampling validity -- Verify that compared systems use matched sampling parameters (temperature, top_k, top_p, repeat_penalty, min_p, frequency/presence penalties). Unmatched sampling defaults produce 5-10x quality deltas independent of model quality. Flag any cross-stack comparison (Ollama vs. llama-server, vs. mlx_lm, etc.) as requiring explicit sampling verification. Latency metrics are sampling-insensitive; quality metrics are sampling-dominated.

  3. Check score semantics -- If a threshold, gate, or decision boundary is applied to a score: verify the score encodes the dimension being decided on. Rank-based scores (RRF, percentile, rank-reciprocal) only encode relative position, not absolute quality -- a threshold on them cannot distinguish "good match ranked #1" from "bad match ranked #1". Flag when a quality-based decision (abstain, confidence, reject) uses an ordinal/rank-derived metric. Flag when fusion or aggregation discards the signal axis the gate needs (e.g. cosine distance carries quality, RRF destroys it).

  4. Check measurement scope -- Verify: (a) the metric measures what the conclusion claims, (b) measurement is on the actual deployment stack (not a proxy), (c) no cross-stack gap is inferred from different hardware/quantization/runtime combinations without re-measurement. Flag scope leakage: applying a result derived from stack X to justify a conclusion about stack Y.

  5. Audit the judge or scorer -- If a judge model or human rater is used: check for judge bias toward length, judge bias toward its own outputs, judge reliability (is inter-rater agreement reported?), and ceiling effects. If automated metrics (BLEU, Pearson, etc.) are used: check whether the metric is appropriate for the task type.

Read the full file on GitHub · 56 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 · 56 lines · 43 tokens per session scan A 2a9fc3ddd0d0

Subscribe to this mod's changes

eval-auditor is an agent published in the GitHub repository sliamh11/Deus (52 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 870 once invoked, about $0.0002 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 2026-08-30.

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