Evals

Evaluates AI agents and prompts with deterministic scoring and transcript capture.

1|Updated Jan 24, 2026
One-click install
npx skills add https://github.com/verrio1/vaughn-pai --skill evals-verrio1
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: Evals
Source: https://github.com/verrio1/vaughn-pai/tree/main/skills/Evals
Command: npx skills add https://github.com/verrio1/vaughn-pai --skill evals-verrio1

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Evals provides a deterministic framework to evaluate AI agents and prompts with auditable results.

Core Features & Use Cases

  • Supports deterministic, AI-based, and human graders to measure capability and quality across diverse tasks.
  • Manages prompts, test cases, golden outputs, and results with a file-based store and optional SQLite for fast queries.
  • Enables science-grade evaluation workflows (pass@k, pass^k, transcripts, comparisons) across use-cases.

Quick Start

Run a basic evaluation with a prepared use-case: bun run ~/.claude/skills/Evals/EvalServer/cli-run.ts --use-case newsletter-summary

Frequently Asked Questions about Evals

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

FAQPage Schema
How do I evaluate AI agent workflows deterministically?

You can evaluate AI agent workflows deterministically by applying structured scoring, AI-based rubrics, and human reviews to capture transcripts and detect regressions. This framework ensures auditable, repeatable experiment results across models.

What is the best way to compare LLM models and prompts with auditable results?

Comparing LLM models and prompts requires a deterministic framework that manages test cases, golden outputs, and transcripts. This enables cross-model comparisons and regression detection with science-grade, auditable evaluation results.

Can I run automated prompt evaluations using a CLI?

Yes, you can run automated prompt evaluations using a CLI-first orchestration pattern. By executing a CLI script with a prepared use-case, you initiate the evaluation process against managed test cases and golden outputs.

Does this evaluation framework support both AI-based and human graders?

Yes, the evaluation framework supports deterministic, AI-based, and human graders to measure capability and quality. It combines these scoring methods to deliver comprehensive, science-grade evaluation results across diverse tasks.

How do I detect regressions in AI agent performance?

To detect regressions in AI agent performance, run repeatable evaluations that capture transcripts and apply structured scoring. Cross-model comparisons and deterministic test cases help identify when output quality degrades.

Do I need a database to manage AI evaluation test cases and results?

You do not strictly need a database, as the framework uses a file-based store to manage prompts, test cases, and results. An optional SQLite integration is available if you require faster queries across large evaluation datasets.