Eval Harness Skill

Implements formal AI evaluation framework with graded capability and regression evals.

4|Updated Jan 24, 2026
One-click install
npx skills add https://github.com/XD3an/cc-plus --skill eval-harness-skill
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: Eval Harness Skill
Source: https://github.com/XD3an/cc-plus/tree/main/skills/eval-harness
Command: npx skills add https://github.com/XD3an/cc-plus --skill eval-harness-skill

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides a structured framework for evaluating AI development, ensuring predictable and reliable AI behavior through formal evaluation processes.

Core Features & Use Cases

  • Eval-Driven Development (EDD): Implement unit tests for AI, defining expected behavior before coding.
  • Capability & Regression Evals: Differentiate between testing new features and ensuring existing functionality remains intact.
  • Grading Mechanisms: Utilize code-based, model-based, and human graders for comprehensive evaluation.
  • Use Case: Before implementing a new user authentication feature, define capability evals for registration and login, and regression evals to ensure existing login flows are unaffected.

Quick Start

Use the eval harness skill to define a new capability evaluation for the 'user-registration' feature.

Frequently Asked Questions about Eval Harness Skill

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

FAQPage Schema
What is eval-driven development for AI and how does it formalize testing?

Eval-driven development formalizes AI testing by defining expected behavior through capability and regression evals before coding, ensuring predictable behavior and measuring reliability with pass@k and pass^k metrics.

How do I set up capability and regression evals for a new AI feature?

To set up capability and regression evals, define the expected behavior for new features as capability evals, while creating regression evals to ensure existing functionality remains unaffected during development.

What grading mechanisms can I use for evaluating AI behavior?

You can evaluate AI behavior using three grading mechanisms: code-based graders for automated checks, model-based graders for AI-assisted evaluation, and human graders for comprehensive manual assessment.

Does this evaluation framework require specific testing dependencies to function?

The evaluation framework operates independently without requiring specific external dependencies, allowing you to implement formal AI evaluation processes directly within your existing development environment.

What metrics are used to measure AI reliability during regression testing?

Regression testing within this framework measures AI reliability by tracking pass@k and pass^k metrics, providing quantitative data to ensure existing functionality remains intact across development iterations.