Sites with a working MCP server

2,392 sites have an MCP server that is not platform-supplied, and it returned its tool list when we connected. Not registry entries — live endpoints on real sites, with the tools each one exposes. Servers a platform supplies to its sites (Mintlify docs search, Teachify course catalogues, Shopify and Wix storefronts) are on each site's own report, not here. A server is platform-supplied when its tool set is served by at least 200 unrelated domains, when it sits off the site’s own domain, or when it was found through the Shopify storefront fingerprint. Where a site is built on a platform but its server is not platform-supplied, the platform is named beside it. Counts here are of sites (hostnames), not of companies. How we test.