nightly-eval-investigation

Download and analyze three nightly evaluation runs from Google Cloud Storage.

926|71|Updated Jan 27, 2026
One-click install
npx skills add https://github.com/GoogleChrome/modern-web-guidance-src --skill nightly-eval-investigation
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: nightly-eval-investigation
Source: https://github.com/GoogleChrome/modern-web-guidance-src/tree/main/.agents/skills/nightly-eval-investigation
Command: npx skills add https://github.com/GoogleChrome/modern-web-guidance-src --skill nightly-eval-investigation

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

Manually reviewing cross-agent nightly evaluation results to identify broken, outdated, or over-prescribed web guidance is time-consuming and prone to missed cross-agent patterns. This Skill automates the end-to-end process of downloading, analyzing, and diagnosing issues across multiple agent runs to ensure web guidance remains effective and up-to-date.

Core Features & Use Cases

  • Cross-Agent Comparison: Analyze results from Claude Code, Codex CLI, and Jetski CLI nightly runs to spot agent-agnostic issues with guidance or task design.
  • Automated Health Flagging: Automatically flag 4 key problem types: missing expected guides, excessive guide consumption, low guided pass rates, and high unguided pass rates.
  • Qualitative Root-Cause Analysis: Inspect task prompts, guides, and graders for flagged tasks to generate exact, actionable fix recommendations, with structured Markdown and JSON reports for downstream automation.
  • Use Case: If a new View Transitions guide is causing all agents to fail nightly tasks, this Skill will flag the guide, extract common failed assertions across agents, and recommend precise changes to the prompt, guide, or grader.

Quick Start

Use the nightly-eval-investigation skill to download the latest three nightly evaluation runs, flag unhealthy tasks and guides, and generate a full diagnostic report with actionable recommendations.

Frequently Asked Questions about nightly-eval-investigation

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

FAQPage Schema
What is cross-agent nightly evaluation diagnostics for web guidance?

Cross-agent nightly evaluation diagnostics automatically compare results from Claude Code, Codex CLI, and Jetski CLI to spot agent-agnostic issues with guidance or task design, producing structured Markdown and JSON artifacts with actionable fix recommendations.

How do I diagnose failed assertions across multiple agent CLI tools?

You can diagnose failed assertions across multiple CLI tools by running cross-agent diagnostic workflows that inspect task prompts, guides, and graders to extract common failures and generate actionable recommendations for prompt, guide, and grader fixes.

Can I generate structured JSON reports from nightly eval runs for downstream automation?

Yes, you can generate structured Markdown and JSON artifacts containing flagged task details, failed assertions, and actionable recommendations from the latest three nightly evaluation runs to support downstream automation pipelines.

How do I identify task drift and guide consumption issues in nightly evals?

You identify task drift and guide consumption issues by tracking guide discovery, pass rates, and guide consumption patterns across the latest three distinct nightly evaluation runs to flag tasks that exhibit excessive guide consumption or low guided pass rates.

Does this nightly evaluation analysis require any specific dependencies or setup?

No specific dependencies are required to run the nightly evaluation analysis, as the Skill operates independently to download and analyze the latest three nightly evaluation runs from Google Cloud Storage using its internal scripts.