# ============================================================
# AI, training, search-assistant, and data-collection crawlers
# ============================================================

User-agent: Amazonbot
Disallow: /

User-agent: Amzn-SearchBot
Disallow: /

User-agent: anthropic-ai
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: Claude-Web
Disallow: /

User-agent: Claude-SearchBot
Disallow: /

User-agent: Claude-User
Disallow: /

User-agent: Applebot
Disallow: /Items.aspx?*facet=
Disallow: /items.aspx?*facet=
Allow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: AwarioRssBot
User-agent: AwarioSmartBot
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: ChatGPT-User
Disallow: /

User-agent: cohere-ai
Disallow: /

User-agent: DataForSeoBot
Disallow: /

User-agent: Diffbot
Disallow: /

User-agent: FacebookBot
Disallow: /

User-agent: FriendlyCrawler
Disallow: /

User-agent: Google-CloudVertexBot
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: ImagesiftBot
Disallow: /

User-agent: magpie-crawler
Disallow: /

User-agent: Meta-ExternalAgent
User-agent: meta-externalagent
Disallow: /

User-agent: NewsNow
Disallow: /

User-agent: news-please
Disallow: /

User-agent: OAI-SearchBot
Disallow: /

User-agent: omgili
Disallow: /

User-agent: omgilibot
Disallow: /

User-agent: peer39_crawler
User-agent: peer39_crawler/1.0
Disallow: /

User-agent: PerplexityBot
Disallow: /

User-agent: Quora-Bot
Disallow: /

User-agent: Scrapy
Disallow: /

User-agent: TurnitinBot
Disallow: /


# ============================================================
# Social preview crawlers
# Allow normal pages, but not faceted result combinations
# ============================================================

User-agent: facebookexternalhit
Disallow: /Items.aspx?*facet=
Disallow: /items.aspx?*facet=
Allow: /

User-agent: Twitterbot
Disallow: /Items.aspx?*facet=
Disallow: /items.aspx?*facet=
Allow: /


# ============================================================
# All remaining compliant crawlers
# Do not enumerate combinatorial facet-filter result pages
# ============================================================

User-agent: *
Disallow: /Items.aspx?*facet=
Disallow: /items.aspx?*facet=