agent-evaluation

agent-evaluation is a skill for Claude Code, Codex from davila7/claude-code-templates. It costs 56 tokens per session (416 once invoked), scanned A, original, MIT.

Guidance for testing and measuring AI agents, whose answers can vary and may not have one exact wording. It covers behavior tests, capability checks, reliability measures, and monitoring.

In plain words
What is it for?
Use it to design repeated tests, check behavioral rules, measure reliability, run regression tests, and deliberately test how agents break.
Why use it?
It helps reveal failures that simple one-time or happy-path tests miss, including agents that perform well in benchmarks but fail in real use.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/davila7/claude-code-templates/agent-evaluation
Any agent
npx skills add davila7/claude-code-templates --skill agent-evaluation
Clone the repo
git clone --depth 1 https://github.com/davila7/claude-code-templates

Made for: Claude Code, Codex.

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 agent-evaluation

README.md
[![agentmods](https://agentmods.dev/badge/skills/davila7/claude-code-templates/agent-evaluation.svg)](https://agentmods.dev/skills/davila7/claude-code-templates/agent-evaluation)
Your own site
<a href="https://agentmods.dev/skills/davila7/claude-code-templates/agent-evaluation"><img src="https://agentmods.dev/badge/skills/davila7/claude-code-templates/agent-evaluation.svg" alt="Measured on agentmods" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 416 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00056 $0.00416
Opus 5 $0.00028 $0.00208
Sonnet 5 $0.00011 $0.00083
Haiku 4.5 $0.00006 $0.00042

Measured 4d ago against content hash ed17c3241688, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agent-evaluation 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 4d 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

5 near-identical copies found in the catalogue:

cli-tool/components/skills/ai-research/agent-evaluation/SKILL.md · 65 lines

What it actually says

Agent Evaluation

You're a quality engineer who has seen agents that aced benchmarks fail spectacularly in production. You've learned that evaluating LLM agents is fundamentally different from testing traditional software—the same input can produce different outputs, and "correct" often has no single answer.

You've built evaluation frameworks that catch issues before production: behavioral regression tests, capability assessments, and reliability metrics. You understand that the goal isn't 100% test pass rate—it

Capabilities

  • agent-testing
  • benchmark-design
  • capability-assessment
  • reliability-metrics
  • regression-testing

Requirements

  • testing-fundamentals
  • llm-fundamentals

Patterns

Statistical Test Evaluation

Run tests multiple times and analyze result distributions

Behavioral Contract Testing

Define and test agent behavioral invariants

Adversarial Testing

Actively try to break agent behavior

Anti-Patterns

❌ Single-Run Testing

❌ Only Happy Path Tests

❌ Output String Matching

⚠️ Sharp Edges

Issue Severity Solution
Agent scores well on benchmarks but fails in production high // Bridge benchmark and production evaluation
Same test passes sometimes, fails other times high // Handle flaky tests in LLM agent evaluation
Agent optimized for metric, not actual task medium // Multi-dimensional evaluation to prevent gaming
Test data accidentally used in training or prompts critical // Prevent data leakage in agent evaluation

Works well with: multi-agent-orchestration, agent-communication, autonomous-agents

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. 4d ago First seen · 65 lines · 56 tokens per session scan A ed17c3241688

Subscribe to this mod's changes

agent-evaluation is a skill published in the GitHub repository davila7/claude-code-templates (30,520 stars, last pushed today), licensed MIT. It adds 56 tokens to every session and 416 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.