Blocks AI
Its robots.txt (the public rules file for bots) tells all 24 AI bots we track to stay out of the whole site. It does not name any of them. A catch-all rule (User-agent: *) keeps out every bot it does not list by name, AI or not. The same rules ask our bot to stay out, so we read only robots.txt.
Last checked 19 Oct 2026. Rules file read today. Everything we checked · History
Bots that train AI Blocked
9 of 9 blocked
Blocking these keeps the site out of future AI training. It does not stop AI from reading the site to answer questions.
Bots for AI search Blocked
8 of 8 blocked
Blocking these usually means the site stops showing up as a source in AI answers.
AI assistants Blocked
7 of 7 blocked
5 of these 7 companies say their assistants may ignore robots.txt.
Bot by bot
| AI bot | Allowed? | Where the rule is | Company says it follows robots.txt? |
|---|---|---|---|
| Bots that train AI · Blocked | |||
| GPTBotOpenAI | Blocked | Not named; the catch-all rule applies | Says yes |
| ClaudeBotAnthropic | Blocked | Not named; the catch-all rule applies | Says yes |
| Google-ExtendedGoogle · opt-out name, not a bot | Blocked | Not named; the catch-all rule applies | Says yes |
| Applebot-ExtendedApple · opt-out name, not a bot | Blocked | Not named; the catch-all rule applies | Says yes |
| CCBotCommon Crawl | Blocked | Not named; the catch-all rule applies | Says yes |
| Meta-ExternalAgentMeta | Blocked | Not named; the catch-all rule applies | Suggests yes |
| BytespiderByteDance | Blocked | Not named; the catch-all rule applies | No statement found |
| MistralAI-TrainingMistral AI | Blocked | Not named; the catch-all rule applies | Says yes |
| AI2BotAllen Institute for AI | Blocked | Not named; the catch-all rule applies | Does not say |
| anthropic-aiAnthropic (legacy) · old name | Blocked | Not named; the catch-all rule applies | Unknown |
| Bots for AI search · Blocked | |||
| OAI-SearchBotOpenAI | Blocked | Not named; the catch-all rule applies | Says yes |
| Claude-SearchBotAnthropic | Blocked | Not named; the catch-all rule applies | Says yes |
| PerplexityBotPerplexity | Blocked | Not named; the catch-all rule applies | Suggests yes |
| AmazonbotAmazon | Blocked | Not named; the catch-all rule applies | Says yes |
| Amzn-SearchBotAmazon | Blocked | Not named; the catch-all rule applies | Says yes |
| DuckAssistBotDuckDuckGo | Blocked | Not named; the catch-all rule applies | Says yes |
| MistralAI-IndexMistral AI | Blocked | Not named; the catch-all rule applies | Suggests yes |
| Meta-WebIndexerMeta | Blocked | Not named; the catch-all rule applies | Suggests yes |
| AI assistants · Blocked | |||
| ChatGPT-UserOpenAI | Blocked | Not named; the catch-all rule applies | Says not always |
| Claude-UserAnthropic | Blocked | Not named; the catch-all rule applies | Says yes |
| Perplexity-UserPerplexity | Blocked | Not named; the catch-all rule applies | Says it mostly ignores it |
| Google-AgentGoogle | Blocked | Not named; the catch-all rule applies | Says it mostly ignores it |
| Meta-ExternalFetcherMeta | Blocked | Not named; the catch-all rule applies | Says not always |
| Amzn-UserAmazon | Blocked | Not named; the catch-all rule applies | Says not always |
| MistralAI-UserMistral AI | Blocked | Not named; the catch-all rule applies | Suggests yes |
| For comparison | |||
| GooglebotRegular search engine, for comparison | Blocked | Not named; the catch-all rule applies | |
| BingbotRegular search engine, for comparison | Blocked | Not named; the catch-all rule applies | |
We test two pages: the homepage, and a made-up page that stands in for the rest of the site. "Blocked" means both are off limits. "Some pages blocked" means only one is. Rules for search results, carts, checkout and accounts don't change these labels, because almost every site keeps all bots out of those pages.
The rules file (robots.txt)
# Welcome to Reddit's robots.txt# Reddit believes in an open internet, but not the misuse of public content.# See https://support.reddithelp.com/hc/en-us/articles/26410290525844-Public-Content-Policy Reddit's Public Content Policy for access and use restrictions to Reddit content.# See https://www.reddit.com/r/reddit4researchers/ for details on how Reddit continues to support research and non-commercial use.# policy: https://support.reddithelp.com/hc/en-us/articles/26410290525844-Public-Content-Policy User-agent: *Disallow: /
Everything else we checked
| Front door | We did not visit: the rules ask our bot to stay out. |
|---|---|
| llms.txt | Disallowed for AgentAccessIndexBot by robots.txt |
| ai.txt | Disallowed for AgentAccessIndexBot by robots.txt |
| TDMRep | Disallowed for AgentAccessIndexBot by robots.txt/.well-known/tdmrep.json (W3C Community Group report) |
| Page tags | Homepage not read. |
| Anti-bot software | Served through Fastly.From response headers and cookie names only. A cookie shows the product is there, not how it is set up. |
| Readable by AI | Homepage not read.Homepage only. Useful for site owners; not part of the result. |
| Terms of Service | No Terms of Service page found. |
| Not found | No Content-Signal or Content-Usage lines or licensing signals (RSL License, HTTP 402). |
History
44 versions on record since 1 Jan 2023
One square per month, from Internet Archive copies and our own daily checks. Dark: blocked. Gray: some blocked. Light: allowed. Striped: no copy that month.
- Feb 2026More blocking Now blocked: GPTBot, ClaudeBot, Google-Extended, Applebot-Extended, CCBot, Meta-ExternalAgent, Bytespider, MistralAI-Training and 17 more.Found in the Internet Archive's copies: changed between 5 Jan 2026 and 1 Feb 2026. Evidence: before · after
Show exactly what changed
- # Allowed for archiving- # =====================- User-Agent: *- Allow: /$+ User-agent: *Disallow: / - Jul to Sep 2025Less blocking Now partly blocked: GPTBot, ClaudeBot, Google-Extended, Applebot-Extended, CCBot, Meta-ExternalAgent, Bytespider, MistralAI-Training and 17 more.Found in the Internet Archive's copies: changed between 1 Jul 2025 and 2 Sep 2025. Evidence: before · after
Show exactly what changed
- User-agent: *+ # Allowed for archiving+ # =====================+ User-Agent: *+ Allow: /$Disallow: / - May 2025More blocking Now blocked: GPTBot, ClaudeBot, Google-Extended, Applebot-Extended, CCBot, Meta-ExternalAgent, Bytespider, MistralAI-Training and 17 more.Found in the Internet Archive's copies: changed between 1 Apr 2025 and 1 May 2025. Evidence: before · after
Show exactly what changed
- # 80legs- User-agent: 008- Disallow: /-- # 80legs' new crawler- User-agent: voltron- Disallow: /-- User-Agent: bender- Disallow: /my_shiny_metal_ass-- User-Agent: Gort- Disallow: /earth-- User-agent: MJ12bot- Disallow: /+ # Welcome to Reddit's robots.txt+ # Reddit believes in an open internet, but not the misuse of public content.+ # See https://support.reddithelp.com/hc/en-us/articles/26410290525844-Public-Content-Policy Reddit's Public Content Policy for access and use restrictions to Reddit content.+ # See https://www.reddit.com/r/reddit4researchers/ for details on how Reddit continues to support research and non-commercial use.+ # policy: https://support.reddithelp.com/hc/en-us/articles/26410290525844-Public-Content-Policy- User-agent: PiplBot+ User-agent: *Disallow: /- User-Agent: *- Disallow: /*.json- Disallow: /*.json-compact- Disallow: /*.json-html- Disallow: /*.xml- Disallow: /*.rss- Allow: /r/*.rss- Disallow: /r/*/comments/*.rss- Disallow: /r/*/config/*.rss- Disallow: /r/*/wiki/*.rss- Disallow: /*.i- Disallow: /*.embed- Disallow: /*/comments/*?*sort=- Disallow: */comment/*- Disallow: /r/*/submit$- Disallow: /r/*/submit/$- Disallow: /message/compose*- Disallow: /api- Disallow: /post- Disallow: /submit- Disallow: /goto- Disallow: /*after=- Disallow: /*before=- Disallow: /domain/*t=- Disallow: /login- Disallow: /remove_email/t2_*- Disallow: /r/*/user/- Disallow: /gold?- Disallow: /static/button/button1.js- Disallow: /static/button/button1.html- Disallow: /static/button/button2.html- Disallow: /static/button/button3.html- Disallow: /buttonlite.js- Disallow: /timings/perf… 7 more lines
Reports from readers
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