Meet the SitemapChecker bot

User-Agent

Every outbound request the service makes carries this exact User-Agent header:

SitemapChecker/1.0 (+https://sitemapcheck.app/bot)

What it does

• • Fetches your sitemap XML when a check is requested for your site.
• • Discovers child sitemaps from sitemap-index files and from robots.txt.
• • Visits every URL listed in the sitemap. By default these are HEAD requests (status check only). For "Cache warmup" or SEO extraction, full GET requests are used so the response body is read.
• • Collects status code, response time, redirect target, and cache headers (Cache-Control, Age, CF-Cache-Status, etc.).

When it visits

Only when a user of sitemapcheck.app asks for a check:

• • A one-off check submitted from the homepage form.
• • A scheduled check (as often as every 30 minutes, up to monthly) configured by a user who registered your sitemap.

There is no autonomous crawling — the bot does not follow internal links and does not visit URLs that aren't in a submitted sitemap.

Politeness

• • Configurable delay between requests (500–5000 ms, default 1000 ms).
• • Configurable concurrency per check (1–10 simultaneous requests).
• • Hard URL caps per check based on the user's plan (between 500 and 10,000 URLs).
• • HEAD by default for plain status checks — only GET when the user explicitly opted in to cache warmup or SEO metadata extraction.