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check-meta

@leobrival/serum-plugins-official
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Analyze and validate meta tags on web pages. Use when users ask to check meta tags, verify SEO tags, audit page titles, check Open Graph tags, verify canonical URLs, or analyze social sharing tags. Detects missing title, description issues, duplicate tags, and Open Graph problems.

Install Skill

1Download skill
2Enable skills in Claude

Open claude.ai/settings/capabilities and find the "Skills" section

3Upload to Claude

Click "Upload skill" and select the downloaded ZIP file

Note: Please verify skill by going through its instructions before using it.

SKILL.md

name check-meta
description Analyze and validate meta tags on web pages. Use when users ask to check meta tags, verify SEO tags, audit page titles, check Open Graph tags, verify canonical URLs, or analyze social sharing tags. Detects missing title, description issues, duplicate tags, and Open Graph problems.

Check Meta

Analyze and validate meta tags on web pages for SEO and social sharing.

Quick Start

cd /path/to/html-checker/scripts
bun src/check-meta.ts <URL>

CLI Options

Option Short Default Description
--verbose -v false Show all meta tags found
--json -j false Output results as JSON

Checks Performed

Check Severity Description
Missing title Error Page has no title tag
Title too short Warning Title under 30 characters
Title too long Warning Title over 60 characters
Missing description Error No meta description
Description too short Warning Description under 50 characters
Description too long Warning Description over 160 characters
Missing canonical Warning No canonical URL specified
Missing og:title Info No Open Graph title
Missing og:description Info No Open Graph description
Missing og:image Info No Open Graph image
Missing twitter:card Info No Twitter card meta
Duplicate meta Warning Same meta tag appears twice

Usage Examples

# Basic check
bun src/check-meta.ts https://example.com

# Verbose output
bun src/check-meta.ts https://example.com --verbose

# JSON output
bun src/check-meta.ts https://example.com --json

Output Example

Meta Analysis for https://example.com

Title: "Example Domain" (14 chars)
Description: "This domain is for use in illustrative examples..." (156 chars)

SEO Tags:
  [OK] title: Example Domain
  [OK] description: This domain is for...
  [MISSING] canonical

Open Graph:
  [MISSING] og:title
  [MISSING] og:description
  [MISSING] og:image

Twitter:
  [MISSING] twitter:card
  [MISSING] twitter:title

Issues Found: 5
  [WARNING] Title too short (14 chars, min 30)
  [WARNING] Missing canonical URL
  [INFO   ] Missing og:title
  [INFO   ] Missing og:image
  [INFO   ] Missing twitter:card

Recommendations:
  - Expand title to 30-60 characters
  - Add canonical URL to prevent duplicate content
  - Add Open Graph tags for social sharing

SEO Best Practices

  • Title: 30-60 characters, include primary keyword
  • Description: 50-160 characters, compelling call-to-action
  • Canonical: Always specify to prevent duplicate content
  • Open Graph: Essential for social media sharing