agent-evaluation

Evaluate LLM agents with repeatable behavioral, capability, and reliability suites.

15|2|Updated May 23, 2026
One-click install
npx skills add https://github.com/VKirill/antigravity-for-claude-code --skill agent-evaluation-vkirill
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: agent-evaluation
Source: https://github.com/VKirill/antigravity-for-claude-code/tree/main/skills/agent-evaluation
Command: npx skills add https://github.com/VKirill/antigravity-for-claude-code --skill agent-evaluation-vkirill

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Evaluating LLM agents requires more than one-off scores because reliability varies across real inputs and failure modes, so this Skill helps you measure behavior, capability, and operational risk with repeatable eval methods.

Core Features & Use Cases

  • Behavioral testing: build invariant, contract, snapshot, and regression suites that catch real-world regressions in tool use, safety, and output structure.
  • Capability benchmarks: run established benchmarks like SWE-bench, AgentBench, and HumanEval, plus pass@k and calibration to understand strengths and limits.
  • Reliability metrics: compute N-run consistency, worst-case percentiles, error budgets, and SLOs to quantify reliability variance.
  • LLM-as-judge: design rubrics, mitigate judge bias, run dual-judge/ensemble scoring, and verify correlation with human judgment.
  • Production monitoring: instrument tracing and do eval-in-production with drift detection and cost tracking for continuous assurance.
  • Red teaming: create adversarial tests for prompt injection, jailbreaks, tool misuse, and data leakage to ensure robustness.

Quick Start

Use agent-evaluation to design an N-run eval plan for your agent that includes behavioral invariants, an LLM-judge rubric, and production monitoring checks.

Frequently Asked Questions about agent-evaluation

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I measure LLM agent reliability across different inputs?

To evaluate LLM agent reliability, design repeatable behavioral testing suites that measure invariants, contracts, and snapshots to catch real-world regressions in tool use, safety, and output structure.

What is the best way to set up LLM-as-judge rubrics for agent evaluation?

The best way to set up LLM-as-judge rubrics is to design structured scoring criteria, mitigate judge bias, run dual-judge or ensemble scoring, and verify correlation with human judgment for accurate agent scoring.

How do I create adversarial tests for prompt injection and jailbreaks?

You can create adversarial tests for prompt injection and jailbreaks by applying red-teaming techniques that generate attacks for tool misuse, data leakage, and jailbreaks to ensure LLM agent robustness.

How do I run capability benchmarks like SWE-bench for LLM agents?

To run capability benchmarks for LLM agents, you can execute established suites like SWE-bench, AgentBench, and HumanEval, applying pass@k and calibration metrics to understand agent strengths and limits.

Can I do eval-in-production with drift detection and cost tracking?

Yes, you can do eval-in-production by instrumenting tracing to enable continuous drift detection and cost tracking, providing ongoing assurance of LLM agent behavior in live environments.

Do I need YAML frontmatter to implement behavioral testing for LLM agents?

Yes, implementing behavioral testing, benchmarks, and LLM-as-judge rubrics requires YAML frontmatter-driven discovery plus loading of corresponding reference files to execute the evaluation methods.