Does cnrs.fr block AI crawlers?
Open to AI crawlers
cnrs.fr doesn't block any of the major AI crawlers we track in its robots.txt.
Checked from cnrs.fr/robots.txt. Robots rules change; the live file is the source of truth.
- AI crawlers blocked
- 0 of 12
- AI bots named in robots.txt
- 0
- llms.txt
- Not found
- Popularity
- Tranco top 5,000 (#3,169)
Can AI assistants cite cnrs.fr?
- ChatGPT search: its search crawlers may read the site
- Claude: its search crawlers may read the site
- Perplexity: its search crawlers may read the site
cnrs.fr doesn't opt out of AI model training through robots.txt. Training crawlers and answer crawlers are separate: blocking training doesn't by itself remove a site from AI answers.
AI crawler access, bot by bot
| Crawler | Used for | Status on cnrs.fr |
|---|---|---|
| GPTBotOpenAI | AI training | Some paths restricted |
| OAI-SearchBotOpenAI | AI answers | Some paths restricted |
| ChatGPT-UserOpenAI | AI answers | Some paths restricted |
| ClaudeBotAnthropic | AI training | Some paths restricted |
| Claude-SearchBotAnthropic | AI answers | Some paths restricted |
| Claude-UserAnthropic | AI answers | Some paths restricted |
| PerplexityBotPerplexity | AI answers | Some paths restricted |
| Google-ExtendedGoogle | AI training | Some paths restricted |
| Applebot-ExtendedApple | AI training | Some paths restricted |
| CCBotCommon Crawl | AI training | Some paths restricted |
| BytespiderByteDance | AI training | Some paths restricted |
| Meta-ExternalAgentMeta | AI training | Some paths restricted |
How cnrs.fr compares
- 19% of the 1,278 popular sites we checked block GPTBot; cnrs.fr does not.
- 18% of the 1,278 popular sites we checked block ClaudeBot; cnrs.fr does not.
- 14% of the 1,278 popular sites we checked block PerplexityBot; cnrs.fr does not.
- Among 179 sites of similar popularity, 25% block at least one AI crawler.
The robots.txt rules that apply to AI crawlers
User-agent: * Allow: /core/*.css$ Allow: /core/*.css? Allow: /core/*.js$ Allow: /core/*.js? Allow: /core/*.gif Allow: /core/*.jpg Allow: /core/*.jpeg Allow: /core/*.png Allow: /core/*.svg Allow: /profiles/*.css$ Allow: /profiles/*.css? Allow: /profiles/*.js$ Allow: /profiles/*.js? Allow: /profiles/*.gif Allow: /profiles/*.jpg Allow: /profiles/*.jpeg Allow: /profiles/*.png Allow: /profiles/*.svg Disallow: /core/ Disallow: /profiles/ Disallow: /README.md Disallow: /composer/Metapackage/README.txt Disallow: /composer/Plugin/ProjectMessage/README.md Disallow: /composer/Plugin/Scaffold/README.md Disallow: /composer/Plugin/VendorHardening/README.txt Disallow: /composer/Template/README.txt Disallow: /modules/README.txt Disallow: /sites/README.txt Disallow: /themes/README.txt Disallow: /admin/ Disallow: /comment/reply/ Disallow: /filter/tips Disallow: /node/add/ Disallow: /search/ Disallow: /user/register Disallow: /user/password Disallow: /user/login Disallow: /user/logout Disallow: /media/oembed Disallow: /*/media/oembed
Excerpt: only groups for all user-agents (*) or named AI crawlers, up to 40 rules per group.
Sites with a similar AI policy
Does cnrs.fr block GPTBot?
No. As of Oct 2, 2026, cnrs.fr's robots.txt doesn't block GPTBot, though some paths are restricted for all crawlers.
Can ChatGPT search show results from cnrs.fr?
Its robots.txt doesn't block OAI-SearchBot or ChatGPT-User, so ChatGPT's search crawlers may read it. Whether pages are actually shown depends on ChatGPT.
Does cnrs.fr have an llms.txt file?
We didn't find a valid llms.txt at cnrs.fr/llms.txt when we checked.
Data: cnrs.fr's public robots.txt and llms.txt, fetched by AskableHQ. Popularity rank from the Tranco list (ID Y83YG). Methodology.