---
title: ToolRouter — Use Case
description: Step-by-step guide for a real-world ToolRouter use case with agent-specific instructions.
url: https://toolrouter.com/tools/seo/use-cases/analyze-core-web-vitals
---
# Analyze Core Web Vitals

Core Web Vitals — Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP) — are Google ranking factors. Pages with poor vitals get penalized in search results while fast pages get a ranking boost.

ToolRouter's check_vitals skill measures all three Core Web Vitals metrics and provides specific recommendations for improvement. This includes identifying the largest content element causing slow LCP, layout shifts causing high CLS, and JavaScript bottlenecks affecting INP.

Regular monitoring is critical because vitals can degrade as you add features, third-party scripts, or new content. Running vitals checks as part of your CI/CD or QA process catches regressions before they impact rankings.

**Tool:** [SEO Analysis](https://toolrouter.com/tools/seo)
**Skills:** check_vitals

## Agent Guides

- [How to Analyze Core Web Vitals with Claude](https://toolrouter.com/tools/seo/use-cases/analyze-core-web-vitals/claude): Guide for Claude
- [How to Analyze Core Web Vitals with ChatGPT](https://toolrouter.com/tools/seo/use-cases/analyze-core-web-vitals/chatgpt): Guide for ChatGPT
- [How to Analyze Core Web Vitals with Copilot](https://toolrouter.com/tools/seo/use-cases/analyze-core-web-vitals/copilot): Guide for Copilot
- [How to Analyze Core Web Vitals with OpenClaw](https://toolrouter.com/tools/seo/use-cases/analyze-core-web-vitals/openclaw): Guide for OpenClaw
