eval-auditor

eval-auditor is an agent for Claude Code from VKirill/claude-lane-stack. It costs 55 tokens per session (190 once invoked), scanned A, original, MIT.

An auditor for AI evaluations, which are tests used to measure whether an AI feature works as intended.

In plain words
What is it for?
Use it to review whether the expected-answer set was independent, the metric matches the user's goal, simple bad outputs can score well, and the verdict is supported by evidence.
Why use it?
It can expose biased or misleading results caused by test data leaking into prompts, weak metrics, gaming, or unjustified pass thresholds.

Agent for Claude Code

Written for Claude Code: background in frontmatter. Also seen: model in frontmatter.

Part of the lane-stack plugin — 62 skills, 4 commands, 24 agents, 1 MCP server shipped together

Good fit Use it to review whether the expected-answer set was independent, the metric matches the user's goal, simple bad outputs can score well, and the verdict is supported by evidence.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/vkirill/claude-lane-stack/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/VKirill/claude-lane-stack

Made for: Claude Code.

Or install lane-stack, the plugin that ships this one along with the rest of its 62 skills, 4 commands, 24 agents, 1 MCP server.

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/vkirill/claude-lane-stack/eval-auditor/github.svg)](https://agentmods.dev/agents/vkirill/claude-lane-stack/eval-auditor)
Your own site
<a href="https://agentmods.dev/agents/vkirill/claude-lane-stack/eval-auditor"><img src="https://agentmods.dev/badge/agents/vkirill/claude-lane-stack/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/vkirill/claude-lane-stack/eval-auditor"><img src="https://agentmods.dev/badge/agents/vkirill/claude-lane-stack/eval-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 190 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 $0.00055 $0.00190
Opus 5.5 $0.00022 $0.00076
Sonnet 5.5 $0.00011 $0.00038
Haiku 4.5 $0.00006 $0.00019

Measured today against content hash 48c376bfa470, 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 today.

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/lane-stack/agents/eval-auditor.md · 15 lines

What it actually says

eval-auditor

Answer each EVAL-REVIEW question with evidence (file:line, a sample): was the gold set written before tuning, does the metric track the user goal, can a trivial output score high, are test items in the prompt or few-shots, is the threshold justified. Verdict sound or flawed.

Read-only on product code unless the PM names a file you write. Report by path what you wrote.

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. today First seen · 15 lines · 55 tokens per session scan A 48c376bfa470

Subscribe to this mod's changes

eval-auditor is an agent published in the GitHub repository VKirill/claude-lane-stack (124 stars, last pushed yesterday), licensed MIT. It adds 55 tokens to every session and 190 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 2026-10-25.

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