eval-harness

Creates Grading-based workflows for evaluating LLM agent outputs.

Updated Nov 17, 2025
One-click install
npx skills add https://github.com/itou-daiki/easy_stat_edu --skill eval-harness-itou-daiki
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: eval-harness
Source: https://github.com/itou-daiki/easy_stat_edu/tree/main/.agent/skills/eval-harness
Command: npx skills add https://github.com/itou-daiki/easy_stat_edu --skill eval-harness-itou-daiki

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill provides a formal evaluation framework for Claude Code sessions, applying eval-driven development (EDD) principles to ensure reliable, testable AI coding outcomes.

Core Features & Use Cases

  • Capability Evals: Define and verify new features with explicit success criteria.
  • Regression Evals: Guard against regressions across updates and iterations.
  • Grader Types: Code-based, model-based, and human graders to balance determinism and nuanced evaluation.
  • Metrics: pass@k and related metrics to quantify reliability and progress over time.
  • Eval Workflow: Define, implement, evaluate, and report with clear baselines and storage for logs.
  • Storage & Best Practices: Structured storage for eval definitions, baselines, and run histories.

Quick Start

Define your first eval plan, implement the tests, and run the eval workflow to generate a report.

Frequently Asked Questions about eval-harness

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

FAQPage Schema
How do I evaluate AI coding reliability in Claude Code sessions?▼

To evaluate AI coding reliability in Claude Code sessions, define eval plans with explicit success criteria, run regression tests against stored baselines, and quantify results using pass@k metrics.

What is eval-driven development for AI coding assistants?▼

Eval-driven development for AI coding assistants is a framework that rigorously tests capability and regression scenarios, applying formal graders to ensure reliable, testable outcomes across code updates.

How do I structure AI evaluation workflows for regression testing?▼

Structure AI evaluation workflows for regression testing by defining eval criteria, implementing tests, running evaluations against stored baselines, and generating reports to track progress over time.

Can I use model-based graders for AI evaluation alongside code-based tests?▼

Yes, you can use model-based graders for AI evaluation alongside code-based and human graders to balance deterministic testing with nuanced evaluation of complex coding outcomes.

What metrics quantify AI reliability progress during eval-driven development?▼

Pass@k and related metrics quantify AI reliability progress during eval-driven development by measuring how consistently an AI coding assistant meets defined success criteria across multiple attempts.

How should I store eval definitions and run histories for repeatable assessments?▼

Store eval definitions, baselines, and run histories using structured storage best practices to ensure repeatable assessments and accurate tracking of regression and capability evals over iterations.