Technical Seo Checker

Technical Seo Checker

Technical SEO audit: Core Web Vitals, crawl, indexing, mobile, speed, architecture, redirects

Category: content-creation Source: aaron-he-zhu/seo-geo-claude-skills

What Is Technical Seo Checker?

Technical SEO Checker is a specialized Claude Code skill designed for comprehensive technical SEO audits. It systematically evaluates a website’s foundational health by checking key aspects such as Core Web Vitals, crawlability, indexing, mobile optimization, site speed, architecture, and redirects. By leveraging this skill, users can diagnose and address issues that directly impact search engine visibility and user experience. The tool can be integrated into workflows on Claude Code (≥1.0), skills.sh marketplace, ClawHub, and the Vercel Labs ecosystem, making it highly versatile for developers, SEO specialists, and site owners.

Why Use Technical Seo Checker?

Search engines like Google rely on technical signals to crawl, index, and rank web pages. Even the most compelling content can remain invisible if underlying technical issues exist. Technical SEO Checker automates the diagnosis of these issues, helping you:

  • Detect and resolve crawl errors, broken links, and redirect problems.
  • Ensure your site is indexable and adheres to best practices for search engine robots.
  • Measure and improve Core Web Vitals (LCP, CLS, INP) for better ranking and user experience.
  • Identify mobile usability problems that can affect mobile-first indexing.
  • Pinpoint performance bottlenecks that slow down your site and hurt rankings.

By integrating Technical SEO Checker into your workflow, you gain actionable insights that enable proactive site maintenance, reduce manual auditing effort, and ensure ongoing search visibility.

How to Get Started

Getting started with Technical SEO Checker is straightforward. The skill is open source under the Apache-2.0 license and requires no system packages for local use. Optionally, it can connect to external SEO tools via the MCP network for enhanced diagnostics.

To use Technical SEO Checker:

  1. Install or Enable the Skill:
    Integrate the skill within your preferred environment (Claude Code, skills.sh, ClawHub, or Vercel Labs).

  2. Invoke with a URL or Domain:
    Use the argument hint to specify the website you wish to audit.
    Example command: 

    technical-seo-checker https://www.example.com

  3. Leverage WebFetch:
    The skill uses WebFetch to retrieve and analyze site data, ensuring up-to-date information.

  4. Review Output:
    The audit will provide a detailed breakdown of technical SEO health, highlighting issues and actionable recommendations.

Key Features

Technical SEO Checker offers a robust set of features covering all critical areas of technical SEO:

  • Core Web Vitals Analysis
    Measures Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP) to assess user-centric performance.

    # Example: Fetch and print Core Web Vitals data
import requests

url = "https://www.example.com"
response = requests.get(f"https://webvitals.dev/api/v1/{url}")
data = response.json()
print(f"LCP: {data['lcp']}, CLS: {data['cls']}, INP: {data['inp']}")

  • Crawlability and Indexability Checks
    Scans for robots.txt restrictions, XML sitemaps, canonical tags, and duplicate content issues.

    # Example: Check for robots.txt accessibility
robots_url = url + "/robots.txt"
robots_response = requests.get(robots_url)
if robots_response.status_code == 200:
    print("robots.txt found. Checking directives...")
else:
    print("robots.txt missing or inaccessible.")

  • Mobile Optimization Review
    Verifies mobile-friendliness, viewport settings, and responsive design compliance.

  • Site Speed and Performance Audit
    Identifies render-blocking resources, unoptimized assets, and server-side latency.

  • Architecture and Redirect Validation
    Detects redirect chains/loops, broken internal links, and improper canonicalization.

  • Multilingual and Internationalization Support
    Recognizes hreflang and alternate tags for global SEO.

Best Practices

To maximize the benefits of Technical SEO Checker:

  • Run Audits Regularly:
    Integrate the skill into your deployment or CI/CD pipelines to catch regressions early.

  • Act on Recommendations Promptly:
    Address flagged issues such as slow LCP, high CLS, or crawl errors to maintain optimal performance.

  • Monitor After Major Changes:
    Re-run audits after site redesigns, migrations, or infrastructure updates to prevent new technical issues.

  • Combine with Manual Review:
    Automated checks are powerful, but complement them with manual spot checks for nuanced issues the tool may not catch.

  • Document Fixes and Progress:
    Keep a changelog of issues found and resolved to track improvements over time.

Important Notes

  • Optional Integrations:
    While no system packages are required, you can optionally connect to external SEO APIs via the MCP network for more granular data.

  • Geo-Relevance:
    The skill is geo-agnostic but includes localization support for technical SEO terminology in multiple languages.

  • Privacy and Security:
    The skill fetches and processes only the URLs provided; always ensure you have authorization to audit third-party sites.

  • Skill Updates:
    Refer to the official GitHub repository for the latest releases, documentation, and community support.

Technical SEO Checker is a powerful asset for anyone serious about maintaining high-performing, search-friendly websites. By automating the foundational aspects of technical SEO, it empowers you to focus on growth and content, confident that your site’s infrastructure meets the highest standards.