{"id":19023769,"date":"2026-09-18T19:08:28","date_gmt":"2026-09-18T19:08:28","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/mcp-oauth-discovery-documents\/"},"modified":"2026-09-18T19:08:28","modified_gmt":"2026-09-18T19:08:28","slug":"mcp-oauth-discovery-documents","status":"publish","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/mcp-oauth-discovery-documents\/","title":{"rendered":"MCP OAuth Discovery Documents"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">I have this error in Site Health on all sites that updated to Rank Math 1.0.278:<br \/>Obviously, this will also be appearing in my error logs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>MCP OAuth Discovery Documents<\/strong><br \/>The following .well-known discovery document(s) did not respond as expected: oauth-protected-resource, oauth-authorization-server. This does not match the confirmed .well-known\/acme-challenge\/ interception fingerprint, so the cause is inconclusive from this check alone (it may be a timeout, an access wall such as HTTP Basic Auth or a WAF, or a WordPress-served error).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Check your error\/access logs for the requests to these paths, and rule out an authentication wall (staging HTTP Basic Auth, a WAF, or bot mitigation) before assuming a routing problem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This check runs from the server to itself. A &#8220;Good&#8221; result here does not guarantee external clients can reach these documents: a CDN, WAF, or reverse proxy in front of the site can still 404 these paths for external traffic while the server&#8217;s own loopback request bypasses it. Verify with an external <code>curl<\/code> request after applying any server-config change.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rolling back to 1.0.277.1 eliminates the error. Do you intend to provide a switch\/toggle to disable MCP connector functionality? <\/p>\n","protected":false},"template":"","class_list":["post-19023769","topic","type-topic","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/19023769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/19023769\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=19023769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}