Skills Artificial Intelligence LLM Agent Evaluation

LLM Agent Evaluation

v20261106
agent-evaluation
Test and benchmark LLM agents using behavioral testing, capability assessment, reliability metrics, and production monitoring to catch regressions and ensure robust performance.
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Overview

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

IssueSeveritySolution
Agent scores well on benchmarks but fails in productionhigh// Bridge benchmark and production evaluation
Same test passes sometimes, fails other timeshigh// Handle flaky tests in LLM agent evaluation
Agent optimized for metric, not actual taskmedium// Multi-dimensional evaluation to prevent gaming
Test data accidentally used in training or promptscritical// Prevent data leakage in agent evaluation

Related Skills

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

Info
Name agent-evaluation
Version v20261106
Size 2.05KB
Updated At 2026-11-07
Language