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dereknguyen269
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seo-sitemap

Validate and generate XML sitemaps with URL and robots.txt checks.

Updated Jun 6, 2026
Search Tags:#validation#sitemap#xml#seo#index#crawl
One-click install
npx skills add https://github.com/dereknguyen269/Codex-SEO --skill seo-sitemap-dereknguyen269
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: seo-sitemap
Source: https://github.com/dereknguyen269/Codex-SEO/tree/main/skills/seo-sitemap
Command: npx skills add https://github.com/dereknguyen269/Codex-SEO --skill seo-sitemap-dereknguyen269

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Analyze existing XML sitemaps or generate new ones with industry templates. Validates format, URLs, and structure. Use when user says "sitemap", "generate sitemap", "sitemap issues", or "XML sitemap".

Core Features & Use Cases

  • Validate XML sitemap structure and URLs
  • Generate sitemap indices for large sites (>50k URLs)
  • Validate compatibility with robots.txt and HTTPS-only URLs

Quick Start

Use this skill to analyze your sitemap.xml and generate a compliant sitemap index.

Frequently Asked Questions about seo-sitemap

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

FAQPage Schema
How do I validate an XML sitemap for URL health and structure errors?▼

Sitemap validation analyzes existing XML files to enforce structural validity, verify URL health, enforce HTTPS-only URLs, and confirm accurate lastmod dates for proper crawling.

What is a sitemap index and when do I need to generate one?▼

A sitemap index is needed for large sites exceeding 50,000 URLs. You generate it to reference multiple sitemap files, ensuring search engines can efficiently discover and crawl all URLs.

Can I generate a new XML sitemap for a live site?▼

Yes, you can generate XML sitemaps by applying the skill to live sites. It produces correct XML sitemaps using industry templates while enforcing HTTPS-only URLs and proper XML structure.

Does sitemap validation check compatibility with robots.txt?▼

Yes, sitemap validation includes checking compatibility with robots.txt. It ensures your sitemap URLs align with your robots.txt rules to provide proper search engine crawling instructions.

How do I fix XML sitemap issues related to lastmod dates?▼

To fix XML sitemap issues with lastmod dates, the skill validates and enforces accurate lastmod dates, ensuring search engines receive correct URL modification timestamps for efficient crawling.

What are the limitations of validating sitemaps for HTTPS-only URLs?▼

The limitation is that sitemap validation strictly enforces HTTPS-only URLs, meaning any HTTP URLs will fail the check. This ensures secure crawling but requires all site URLs to use HTTPS.

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