eval-harness

Define capability and regression evals with code-based, model-based, or human graders.

Updated Jul 27, 2026
One-click install
npx skills add https://github.com/kouiso/designdiff --skill eval-harness-kouiso
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: eval-harness
Source: https://github.com/kouiso/designdiff/tree/main/.claude/skills/eval-harness
Command: npx skills add https://github.com/kouiso/designdiff --skill eval-harness-kouiso

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This Skill provides a structured framework for evaluating AI code sessions, enabling rigorous testing and performance measurement through eval-driven development (EDD) principles.

Core Features & Use Cases

  • Define and Track Evals: Create capability and regression evals before implementation.
  • Measure Reliability: Utilize pass@k and pass^k metrics to quantify AI performance.
  • Use Case: Integrate this Skill into your AI development workflow to ensure new features don't break existing functionality and to benchmark AI model improvements over time.

Quick Start

Define a new capability evaluation for a feature named 'user-authentication'.

Frequently Asked Questions about eval-harness

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

FAQPage Schema
What is eval-driven development for AI code sessions?

Eval-driven development is a formal evaluation framework that defines capability and regression evals before implementation to rigorously test and measure AI code performance.

How do I measure AI reliability using pass@k and pass^k metrics?

You measure AI reliability by applying pass@k and pass^k metrics within an evaluation framework to quantify AI model performance and track improvements over time.

How do I set up regression testing for AI development?

Set up regression testing for AI development by defining regression evals within an evaluation framework to ensure new features do not break existing functionality during continuous integration.

Can I use code-based and model-based graders to evaluate AI outputs?

Yes, you can grade AI outputs using code-based, model-based, or human graders within an evaluation framework to assess capability and regression eval results.

Does this evaluation framework require external dependencies to run?

No, this evaluation framework operates without external dependencies, using included scripts and references to implement eval-driven development principles for AI code sessions.

When should I use a formal evaluation framework for AI development?

Use a formal evaluation framework for AI development when you need to benchmark model improvements, define capability evals prior to implementation, and facilitate continuous integration testing.