Does marketwatch.com block AI crawlers?

Can AI assistants cite marketwatch.com?

• ChatGPT search: its search crawlers may read the site
• Claude: its search crawler is blocked
• Perplexity: its search crawler is blocked

marketwatch.com opts out of AI training by Anthropic, Google, Apple, Common Crawl, ByteDance, Meta. 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

How marketwatch.com compares

• 19% of the 1,278 popular sites we checked block GPTBot; marketwatch.com does not.
• 18% of the 1,278 popular sites we checked block ClaudeBot; marketwatch.com is one of them.
• 14% of the 1,278 popular sites we checked block PerplexityBot; marketwatch.com is one of them.
• Among 149 sites of similar popularity, 25% block at least one AI crawler.

The robots.txt rules that apply to AI crawlers

User-agent: *
Disallow: /

User-agent: googlebot
User-agent: googlebot-image
User-agent: GoogleOther
User-agent: Googlebot-Video
User-agent: Google-InspectionTool
User-agent: AdsBot-Google
User-agent: AdsBot-Google-Mobile
User-agent: AdsBot-Google-Mobile-Apps
User-agent: Storebot-Google
User-agent: google-read-aloud
User-agent: bingbot
User-agent: msnbot
User-agent: bingpreview
User-agent: slurp
User-agent: yahoo
User-agent: yandex
User-agent: YandexImages
User-agent: baiduspider
User-agent: Pinterestbot
User-agent: Yeti
User-agent: MojeekBot
User-agent: 360Spider
User-agent: google-cloudvertexbot
User-agent: duckduckbot
User-agent: petalbot
User-agent: Applebot
User-agent: AppleNewsBot
User-agent: flipboard
User-agent: qwantbot
User-agent: SeznamBot
User-agent: yisouspider
User-agent: proximic
User-agent: admantx
User-agent: thetradedesk
User-agent: outbrain
User-agent: ias_crawler
User-agent: AmazonAdBot
User-agent: pubmatic
User-agent: smartologybot
User-agent: parselybot
User-agent: IllumaBot/1.0
User-agent: BomboraBot
User-agent: IllumaBot/1.0
User-agent: Publication-Access-for-Facebook
User-agent: Wallie
User-agent: mediapartners-google
User-agent: Screaming Frog SEO Spider
User-agent: DeepCrawl
User-agent: AhrefsBot
User-agent: SemrushBot
User-agent: SimilarWebBot
User-agent: SISTRIX
User-agent: OnCrawl
User-agent: botify
User-agent: Chrome-Lighthouse
User-agent: ChatGPT-User
User-agent: GPTBot
User-agent: OAI-SearchBot
User-agent: facebookexternalhit
User-agent: facebot
User-agent: twitterbot
User-agent: linkedinbot
User-agent: telegrambot
User-agent: snapchat
User-agent: newrelicpinger
User-agent: siteimprovebot
User-agent: uptimerobot
User-agent: pingdom.com_bot_version_1.4
User-agent: sentry
User-agent: schema-validator
User-agent: googleimageproxy
User-agent: Iframely
User-agent: Vocabtracker
User-agent: EpvzCrawl6194680250
User-agent: Citoid
User-agent: ZoteroTranslationServer
Allow: /
Disallow: /2/
Disallow: /3com/
Disallow: /admin/
Disallow: /bgpoxy/
Disallow: /bin/
Disallow: /cDN_contENt/
Disallow: /cgi-bin/
Disallow: /client/
Disallow: /data/
Disallow: /dbcfiles/
Disallow: /dhtml/
Disallow: /dhtmlmenu/
Disallow: /doubleclick/
Disallow: /dynamiclogic/
Disallow: /email/
Disallow: /feeds/
Disallow: /free/
Disallow: /http2_data/
Disallow: /game/*
Disallow: /games/*
Disallow: /*?tickers=
Disallow: /*?submit=
Disallow: /*?exchange=
Disallow: /login/
Disallow: /MarketPerception/
Disallow: /marketperception/
Disallow: /MyPortfolio/
Disallow: /myportfolio/
Disallow: /news/current/
Disallow: /portfolio/
Disallow: /print/
Disallow: /RealMedia/
Disallow: /realmedia/
Disallow: /registration/
Disallow: /search/
Disallow: /search
Disallow: /story/twittershare
Disallow: /tools/alerts/
Disallow: /tpx/

Excerpt: only groups for all user-agents (*) or named AI crawlers, up to 40 rules per group.

Sites with a similar AI policy

• adrta.com · 12 blocked
• hola.com · 4 blocked
• rocketmoney.dev · 12 blocked
• liquipedia.net · 4 blocked
• zdnet.com · 11 blocked
• meb.gov.tr · 8 blocked
• sciencemag.org · 5 blocked
• iqiyi.com · 4 blocked

All sites that are “blocks ai training and ai answers” →