Publishers / mayoclinic.org
Invisible to machines
2 of 14 AI agents get the full page at https://mayoclinic.org/. Checked 2026-09-25 09:33 UTC.
mayoclinic.org scores 41 out of 100 for machine visibility, number 70 of the 100 content publishers checked on 2026-09-25. 2 of 14 AI agents receive the full page: 2 of 8 training crawlers, 0 of 3 AI search indexes and 0 of 3 assistant fetchers. All 12 refusals happen at the HTTP level with no matching robots.txt rule, so a crawler cannot tell the block is deliberate. Googlebot, GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-SearchBot, Claude-User, PerplexityBot, Perplexity-User, Bingbot, Meta-ExternalAgent, Amazonbot, Bytespider, CCBot received a bot-management challenge instead of the page. Googlebot itself is blocked: Bot challenge served (HTTP 403). There is no llms.txt.
youfull pagedegradedblockedunknown
Human
- Status
- 200 → https://www.mayoclinic.org/
- Title
- The world's best hospital - Mayo Clinic
- H1
- Transforming your care
- Words
- 856
- Scripts
- 27 tags · 373 KB
- Meta robots
- Canonical
- https://www.mayoclinic.org
- Server
- Google Frontend
Machine
- robots.txt
- 1 groups · 32 sitemaps
- llms.txt
- missing
- llms-full.txt
- missing
- X-Robots-Tag
- none
- Blocked
- GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-SearchBot, Claude-User, PerplexityBot, Perplexity-User, Meta-ExternalAgent, Amazonbot, Bytespider, CCBot
- Degraded
- none
- Challenged
- Googlebot, GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-SearchBot, Claude-User, PerplexityBot, Perplexity-User, Bingbot, Meta-ExternalAgent, Amazonbot, Bytespider, CCBot
Gaps
- high12 of 14 AI agents are blockedAssistants asked about this page will guess, or cite someone else. Deliberate for a paywalled publisher. Otherwise this is the biggest gap on the list.
- mediumBot-management challenge served to crawlersGooglebot, GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-SearchBot, Claude-User, PerplexityBot, Perplexity-User, Bingbot, Meta-ExternalAgent, Amazonbot, Bytespider, CCBot received an interstitial instead of the page. A robots.txt rule is an honest block. A challenge hides the page without saying so.
- lowNo llms.txtOptional, but a short curated index at /llms.txt is the cheapest way to tell assistants what matters on this site.
- highGooglebot is blockedBot challenge served (HTTP 403)
- infoGoogle-Extended not listedYou block other training crawlers but Gemini training via Google-Extended is still allowed. Add it to the same group if the policy is meant to be even-handed.
- infoCanonical points elsewhereCanonical is https://www.mayoclinic.org/. Indexes will credit that URL, not this one.
Every agent
| Agent | Type | robots.txt | Fetch | Words | Result |
|---|---|---|---|---|---|
| Human (Chrome)You | Human | allowedAllow: / | 2001110 ms | 856 | visible HTTP 200, 856 words |
| GooglebotGoogle · Classic search index. Also feeds AI Overviews. | Search engine | allowedAllow: / | 403 challenge1476 ms | 16 | blocked Bot challenge served (HTTP 403) |
| Google-ExtendedGoogle · Robots-only token controlling Gemini training use. Never fetches on its own. | AI training | allowedAllow: / | n/a | visible Robots-only token; allowed by robots.txt | |
| GPTBotOpenAI · Training crawler for OpenAI models. | AI training | allowedAllow: / | 403 challenge1431 ms | 16 | blocked Bot challenge served (HTTP 403) |
| OAI-SearchBotOpenAI · Indexes for ChatGPT search results and citations. | AI search index | allowedAllow: / | 403 challenge1089 ms | 16 | blocked Bot challenge served (HTTP 403) |
| ChatGPT-UserOpenAI · Live fetch when a user asks ChatGPT about a page. | AI assistant (live fetch) | allowedAllow: / | 403 challenge1097 ms | 16 | blocked Bot challenge served (HTTP 403) |
| ClaudeBotAnthropic · Training crawler for Claude models. | AI training | allowedAllow: / | 403 challenge1078 ms | 16 | blocked Bot challenge served (HTTP 403) |
| Claude-SearchBotAnthropic · Indexes for Claude web search. | AI search index | allowedAllow: / | 403 challenge1076 ms | 16 | blocked Bot challenge served (HTTP 403) |
| Claude-UserAnthropic · Live fetch when a user asks Claude about a page. | AI assistant (live fetch) | allowedAllow: / | 403 challenge1070 ms | 16 | blocked Bot challenge served (HTTP 403) |
| PerplexityBotPerplexity | AI search index | allowedAllow: / | 403 challenge1477 ms | 16 | blocked Bot challenge served (HTTP 403) |
| Perplexity-UserPerplexity | AI assistant (live fetch) | allowedAllow: / | 403 challenge1070 ms | 16 | blocked Bot challenge served (HTTP 403) |
| BingbotMicrosoft · Bing index. Also feeds Copilot and ChatGPT search. | Search engine | allowedAllow: / | 403 challenge1451 ms | 16 | blocked Bot challenge served (HTTP 403) |
| Applebot-ExtendedApple · Robots-only token for Apple Intelligence training. | AI training | allowedAllow: / | n/a | visible Robots-only token; allowed by robots.txt | |
| Meta-ExternalAgentMeta | AI training | allowedAllow: / | 403 challenge1067 ms | 16 | blocked Bot challenge served (HTTP 403) |
| AmazonbotAmazon · Alexa and Amazon AI. | AI training | allowedAllow: / | 403 challenge1463 ms | 16 | blocked Bot challenge served (HTTP 403) |
| BytespiderByteDance · Known for ignoring robots.txt. | AI training | allowedAllow: / | 403 challenge1460 ms | 16 | blocked Bot challenge served (HTTP 403) |
| CCBotCommon Crawl · Open dataset used to train most LLMs. | AI training | allowedAllow: / | 403 challenge1108 ms | 16 | blocked Bot challenge served (HTTP 403) |
Snapshot
Measured 2026-09-25 09:33 UTC from a residential connection. Sites change their rules often, and sites that verify crawler IPs answer differently to different networks. Run a live comparison to see what mayoclinic.org does right now, from Cloudflare's network.