# Core Web Vitals Scorer MCP for AI Agents AI Agent Connect

> Core Web Vitals Scorer helps you judge web performance metrics against Google's official standards. It turns raw numbers like LCP, INP, and CLS into clear status labels, gives you a health score, and tells you how it's likely hitting your SEO rankings.

## Overview
- **Category:** analytics
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_bcvoQ5a4XBmSpKgDx5D2VgdSAEAUqajlMXNPTImN/ai-agent-connect
- **Tags:** lcp, inp, cls, web-vitals, google-seo, performance

## Description

You're trying to figure out if a page is actually fast enough for Google to like it. Instead of hunting through documentation to see if a 2.5-second LCP is okay or bad right now, this Connector does the heavy lifting. You can feed it raw data from your performance tests and get an immediate verdict on your site's health. It handles the math for composite scores and translates those technical numbers into plain English about your search visibility. It's a huge time saver if you're managing multiple sites or auditing complex web apps. You can find this among the 4,000+ options in the Vinkius catalog to keep your performance checks consistent. It's about moving from I think this is fast to I know this meets the standard.

## Prompt Examples

**Prompt:** 
```
Is an INP of 300ms good for SEO?
```

**Response:** 
```
### Performance Status

| Metric | Value | Status | Ranking Impact |
| :--- | :--- | :--- | :--- |
| **INP** | 300ms | **Needs Improvement** | Medium |

**Summary:**
An INP of 300ms falls into the 'Needs Improvement' category. You should aim for under 200ms to ensure a 'Good' rating, which can positively affect your user experience and search visibility.
```

**Prompt:** 
```
Analyze these scores: LCP 2.5s, INP 150ms, CLS 0.05.
```

**Response:** 
```
### Performance Audit

**Overall Health Score:** 85.0
**Status:** Good

**Breakdown:**
*   **LCP:** Good (2.5s)
*   **INP:** Good (150ms)
*   **CLS:** Good (0.05)

**SEO Impact:** Your site is currently meeting the core standards, which helps maintain a stable search ranking.
```

**Prompt:** 
```
What are the current thresholds for CLS?
```

**Response:** 
```
Here are the current Google thresholds for **Cumulative Layout Shift (CLS)**:

*   **Good:** 0.1 or less
*   **Needs Improvement:** Between 0.1 and 0.25
*   **Poor:** Greater than 0.25

Keeping your score below 0.1 is the target for a high-quality user experience.
```

## Capabilities

### Classify single metrics
Turn a single LCP, INP, or CLS value into a Good, Needs Improvement, or Poor status.

### Generate health scores
Get a composite health score for a complete set of performance metrics.

### Retrieve scoring boundaries
Pull the current Google thresholds for all core vitals instantly.

### Estimate SEO impact
See how specific performance numbers affect your search ranking potential.

## Use Cases

### SEO Ranking Audit
An SEO specialist asks the agent to check if a 3.0s LCP is hurting a client's ranking. The agent uses classify_metric_value to provide a quick status.

### Launch Readiness Check
A developer wants to know if the new homepage meets Good standards before going live. They feed all metrics into analyze_performance_suite.

### Regression Testing
A QA engineer feeds a list of metrics from a new build to see if an update caused a Poor rating, using analyze_performance_suite for a full overview.

### Client Reporting
A manager needs a simple health score to show a non-technical client why the site needs optimization. The agent pulls a summary and ranking impact.

## Benefits

- Stop guessing if your site is fast enough. Use classify_metric_value to get immediate status updates for any single metric.
- Get a bird's eye view of your site's performance. analyze_performance_suite gives you a single health score for your entire project.
- Understand the SEO consequences of your speed. The Connector tells you how your scores actually affect your search visibility.
- Stay up to date with Google's changing rules. Use get_threshold_reference to see the latest scoring boundaries instantly.
- Save hours of manual research. You won't have to keep tabs open to check what the current Good threshold is for INP or CLS.
- Standardize your reporting. Every team member can use the same logic to determine if a performance metric is passing or failing.

## How It Works

The bottom line is you get instant, standardized performance audits without manual lookups.

1. Provide your AI client with raw performance numbers like LCP or CLS.
2. The Connector compares these values against current Google standards.
3. You get a status classification, a health score, and a ranking impact summary.

## Frequently Asked Questions

**What does Core Web Vitals Scorer do for my website?**
It takes the raw performance numbers from your site and tells you if they meet Google's standards. It provides a clear Good, Needs Improvement, or Poor status for each metric.

**Can Core Web Vitals Scorer help with my SEO ranking?**
Yes. It specifically calculates the estimated ranking impact of your performance scores, helping you see which speed issues are most likely to hurt your search visibility.

**How do I use Core Web Vitals Scorer for a full audit?**
You can provide a list of metrics to your agent, and it will use the analysis tools to give you a composite health score and a summary of your site's overall performance.

**Does Core Web Vitals Scorer support all Google metrics?**
It focuses on the core vitals that matter most for SEO and user experience: LCP (Largest Contentful Paint), INP (Interaction to Next Paint), and CLS (Cumulative Layout Shift).

**Do I need to manually check the thresholds for Core Web Vitals Scorer?**
No. The Connector can pull the current scoring boundaries for you, so you don't have to worry about keeping up with changes to Google's standards.

**Can I use Core Web Vitals Scorer for mobile performance?**
Absolutely. You can feed it any performance numbers you've gathered from mobile testing to get an instant status and health score.

**What are Core Web Vitals?**
Core Web Vitals are a set of specific metrics used by Google to measure the user experience of a webpage, focusing on loading speed, responsiveness, and visual stability. Tools available: `your_tool_name`.

**How is the composite score calculated?**
The composite score is a weighted average of your LCP, INP, and CLS statuses. Each metric is assigned a grade: Good (100), Needs Improvement (50), or Poor (0).

**Does this tool affect my SEO?**
While the tool itself doesn't change your site, it provides an estimate of how your current performance metrics might impact your search engine visibility.