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seo-sitemap

Validate or generate XML sitemaps with HTTPS and URL checks.

Updated Dec 29, 2025
Search Tags:#sitemap#xml#url validation#sitemap generation#robots.txt#seo audit#lastmod
One-click install
npx skills add https://github.com/Flexksx/alemar-capoeira-chisinau --skill seo-sitemap-flexksx
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: seo-sitemap
Source: https://github.com/Flexksx/alemar-capoeira-chisinau/tree/main/.claude/skills/seo-sitemap
Command: npx skills add https://github.com/Flexksx/alemar-capoeira-chisinau --skill seo-sitemap-flexksx

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

It helps you validate existing XML sitemaps and produce high-quality, standards-compliant sitemaps that improve crawlability by ensuring URLs, structure, and metadata meet practical SEO expectations.

Core Features & Use Cases

  • Sitemap validation: Checks XML validity, URL limits, HTTP 200 availability, HTTPS-only URLs, correct <lastmod> behavior, robots.txt references, and common inclusions like redirected or noindexed URLs.
  • Sitemap generation: Generates new sitemaps using industry templates, performs planning with quality gates (warnings and hard stops for scale), and outputs valid sitemap XML with splitting and sitemap index when needed.
  • Use case: Use it when you need to fix broken sitemap issues (e.g., non-200 URLs, redirect URLs, invalid XML) or create a fresh sitemap for a site with pages/posts/images/videos while maintaining SEO-safe structure.

Quick Start

Ask the seo-sitemap skill to analyze your existing sitemap URL or generate a new sitemap by specifying the website URL and desired mode.

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 errors and HTTPS issues?▼

XML sitemap validation checks URL limits, HTTP 200 availability, HTTPS-only enforcement, correct lastmod behavior, and robots.txt references. It identifies redirected or noindexed URLs to ensure your sitemap meets practical SEO expectations and improves search engine crawlability.

What is the best way to generate a standards-compliant XML sitemap for a large site?▼

Generating a standards-compliant XML sitemap uses industry templates with quality gates for scale. It outputs valid XML with automatic splitting and a sitemap index file when exceeding 50k URLs, ensuring SEO-safe structure for sites with pages, posts, images, and videos.

Why does my sitemap include redirected or noindexed URLs, and how do I fix it?▼

Sitemaps often mistakenly include redirected or noindexed URLs. Running a sitemap diagnostic flags these common inclusions alongside XML validity and HTTP 200 availability checks, allowing you to remove URLs that waste crawl budget and violate SEO best practices.

Can I split a sitemap automatically when it exceeds the 50k URL limit?▼

Yes, sitemap generation enforces valid formatting with automatic splitting and sitemap indexing beyond the 50k URL limit. This ensures large sites maintain valid XML structure and remain fully crawlable without exceeding search engine size constraints.

How do I check if my sitemap URLs are reachable and return HTTP 200 status?▼

Sitemap validation performs URL reachability checks to verify every listed URL returns an HTTP 200 status. It enforces HTTPS-only URLs and flags non-200 responses, ensuring search engines encounter no dead links when crawling your XML sitemap.

Do I need to reference my XML sitemap in robots.txt for SEO audits?▼

Yes, sitemap validation checks for correct robots.txt references during an SEO audit. Ensuring your XML sitemap is properly referenced in robots.txt helps search engines discover and crawl your URLs efficiently.

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