llm-as-a-judge

Build and validate LLM-as-Judge evaluators for automated quality assessment.

10|Updated Feb 19, 2026
One-click install
npx skills add https://github.com/maragudk/evals-skills --skill llm-as-a-judge
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: llm-as-a-judge
Source: https://github.com/maragudk/evals-skills/tree/main/skills/llm-as-a-judge
Command: npx skills add https://github.com/maragudk/evals-skills --skill llm-as-a-judge

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill automates the quality assessment of LLM pipeline outputs by using another LLM as a judge, enabling objective evaluation of nuanced or subjective failure modes.

Core Features & Use Cases

  • Automated Evaluator Creation: Design and deploy LLM-as-Judge evaluators for binary (Pass/Fail) assessments.
  • Iterative Prompt Refinement: Improve judge accuracy by measuring alignment with human labels (TPR/TNR) and refining prompts.
  • Success Rate Estimation: Calculate true success rates with bias correction for production data.
  • Use Case: You need to automatically check if customer support responses are empathetic and helpful. This Skill allows you to build a judge prompt that evaluates this nuanced criterion, moving beyond simple keyword matching.

Quick Start

Use the llm-as-a-judge skill to create a judge prompt for evaluating response helpfulness.

Frequently Asked Questions about llm-as-a-judge

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

FAQPage Schema
How do I build an LLM evaluator for automated quality assessment?

Success rate estimation calculates true success rates for production data by applying bias correction. This accounts for known judge inaccuracies, ensuring the estimated success rates reflect actual pipeline performance rather than raw judge outputs.

How do I measure LLM-as-Judge alignment with human labels?

You measure judge alignment by calculating True Positive Rate (TPR) and True Negative Rate (TNR) against human-labeled data. This allows you to iteratively refine judge prompts to improve evaluation accuracy and reduce false assessments.

How do I set up a CI evaluation pipeline for LLM outputs?

You can set up CI evaluation pipelines by deploying validated LLM-as-Judge evaluators. This automates quality assessment within your development lifecycle to continuously catch subjective failure modes before production release.

What is the best way to evaluate subjective LLM failure modes like response helpfulness?

The best way to evaluate subjective failure modes is using an LLM-as-Judge evaluator. You design specific judge prompts to assess nuanced criteria like empathy or helpfulness, moving beyond simple keyword matching for automated quality assessment.

How do I estimate true success rates for LLM pipeline outputs?

Success rate estimation calculates true success rates for production data by applying bias correction. This accounts for known judge inaccuracies, ensuring the estimated success rates reflect actual pipeline performance rather than raw judge outputs.