# As a condition of accessing this website, you agree to abide by the following
# content signals:

# (a)  If a Content-Signal = yes, you may collect content for the corresponding
#      use.
# (b)  If a Content-Signal = no, you may not collect content for the
#      corresponding use.
# (c)  If the website operator does not include a Content-Signal for a
#      corresponding use, the website operator neither grants nor restricts
#      permission via Content-Signal with respect to the corresponding use.

# The content signals and their meanings are:

# search:   building a search index and providing search results (e.g., returning
#           hyperlinks and short excerpts from your website's contents). Search does not
#           include providing AI-generated search summaries.
# ai-input: inputting content into one or more AI models (e.g., retrieval
#           augmented generation, grounding, or other real-time taking of content for
#           generative AI search answers).
# ai-train: training or fine-tuning AI models.
# use:      how AI systems may consume the content (immediate, reference, or full).

# ANY RESTRICTIONS EXPRESSED VIA CONTENT SIGNALS ARE EXPRESS RESERVATIONS OF
# RIGHTS UNDER ARTICLE 4 OF THE EUROPEAN UNION DIRECTIVE 2019/790 ON COPYRIGHT
# AND RELATED RIGHTS IN THE DIGITAL SINGLE MARKET.

# BEGIN Cloudflare Managed content

User-agent: *
Content-Signal: search=yes,ai-train=no,use=reference
Allow: /

User-agent: Amazonbot
Disallow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: CloudflareBrowserRenderingCrawler
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: meta-externalagent
Disallow: /

# END Cloudflare Managed Content

# robots.txt for http://www.gnu.org/

User-agent: *
Crawl-delay: 4
Disallow: */CVS/
Disallow: */po/
Disallow: */workshop/
Disallow: /cgi-bin/
Disallow: /copyleft/
Disallow: /gnu.css
Disallow: /gnusearch/
Disallow: /norobotsnorhumansshouldevervisithispage/
Disallow: /prep/gnumaint/
Disallow: /prep/wrappers-and-scripts/
Disallow: /private/
Disallow: /rss/
Disallow: /savannah-checkouts/
Disallow: /screenshots/
Disallow: /server/banners/
Disallow: /server/body-include*
Disallow: /server/bottom-notes*
Disallow: /server/footer*
Disallow: /server/fs-gang*
Disallow: /server/generic*
Disallow: /server/gnun/
Disallow: /server/head-include*
Disallow: /server/header*
Disallow: /server/html5-head-include*
Disallow: /server/html5-header*
Disallow: /server/include-file-list*
Disallow: /server/outdated*
Disallow: /server/select-language.html
Disallow: /server/source/
Disallow: /server/staging/
Disallow: /server/top-addendum*
Disallow: /server/trans-map.html
Disallow: /server/whatsnew_translations.xml
Disallow: /software/gnun/linc/
Disallow: /software/gnun/proofread/
Disallow: /software/gnun/reports/
Disallow: /software/gnun/test/
Disallow: /usenet/
Sitemap: http://www.gnu.org/sitemap.xml

# Majestic - SEO
User-agent: MJ12bot
Disallow: /

# DataForSeo - SEO
User-agent: DataForSeoBot
Disallow: /

# webmeup - SEO
User-agent: BLEXBot
Disallow: /

# Ahrefs - SEO
User-agent: AhrefsBot
Disallow: /

# babbar - SEO
User-agent: barkrowler
Disallow: /

# Screamingfrog - SEO
User-agent: Screaming Frog SEO Spider
Disallow: /

# Seozoom - SEO
User-Agent: ZoomBot
Disallow: /

# Brandwatch - SEO
User-agent: magpie-crawler
Disallow: /

# Begin Moz - SEO
# Not to be confused with Mozilla.
User-agent: DotBot
Disallow: /

User-agent: rogerbot
Disallow: /
# End Moz - SEO

# Begin Semrush - SEO
User-agent: SemrushBot
Disallow: /

User-agent: SiteAuditBot
Disallow: /

User-agent: SemrushBot-BA
Disallow: /

User-agent: SemrushBot-SI
Disallow: /

User-agent: SemrushBot-SWA
Disallow: /

User-agent: SplitSignalBot
Disallow: /

User-agent: SemrushBot-OCOB
Disallow: /
# End Semrush - SEO

# cognitiveSEO - SEO
User-agent: JamesBOT
Disallow: /

# oncrawl - SEO
User-agent: Oncrawl
Disallow: /

# BEGIN Awario - Marketing
User-agent: AwarioRssBot
Disallow: /

User-agent: AwarioSmartBot
Disallow: /

User-agent: AwarioBot
Disallow: /
# END Awario - Marketing

# SERPSTAT - SEO
User-agent: serpstatbot
Disallow: /

# website-datenbank.de - Search engine?
User-agent: netEstate NE Crawler
Disallow: /

# Ignores crawl-delay and does not help us.
User-Agent: panscient.com
Disallow: /

# Aggressive Latvian Academic Integrity bot that does not help us.
User-agent: AcademicBotRTU
Disallow: /

# See RT #1298215 about internationalization and localization abuse.
# See RT #1638325 about localization, Savannah, and more.
# See RT #2171216 about redirections and unused files.