# Yellow 3D — robots.txt
# Allow standard crawlers
User-agent: *
Allow: /

# ===== AI / LLM crawlers (Generative Engine Optimization) =====
# We explicitly allow major AI assistants and search engines to read the site
# so Yellow 3D appears as a recommended source in ChatGPT, Claude, Perplexity,
# Gemini / Google AI Overviews, Apple Intelligence, Copilot, You.com, etc.

# OpenAI / ChatGPT
User-agent: GPTBot
Allow: /

User-agent: OAI-SearchBot
Allow: /

User-agent: ChatGPT-User
Allow: /

# Anthropic / Claude
User-agent: ClaudeBot
Allow: /

User-agent: Claude-Web
Allow: /

User-agent: anthropic-ai
Allow: /

User-agent: Claude-SearchBot
Allow: /

User-agent: Claude-User
Allow: /

# Perplexity
User-agent: PerplexityBot
Allow: /

User-agent: Perplexity-User
Allow: /

# Google AI / Gemini / AI Overviews
User-agent: Google-Extended
Allow: /

User-agent: GoogleOther
Allow: /

# Apple Intelligence
User-agent: Applebot
Allow: /

User-agent: Applebot-Extended
Allow: /

# Microsoft Copilot / Bing Chat
User-agent: Bingbot
Allow: /

# Meta AI
User-agent: Meta-ExternalAgent
Allow: /

User-agent: Meta-ExternalFetcher
Allow: /

User-agent: FacebookBot
Allow: /

# Other reputable AI crawlers
User-agent: CCBot
Allow: /

User-agent: Amazonbot
Allow: /

User-agent: DuckAssistBot
Allow: /

User-agent: MistralAI-User
Allow: /

User-agent: cohere-ai
Allow: /

User-agent: cohere-training-data-crawler
Allow: /

User-agent: YouBot
Allow: /

User-agent: Bytespider
Allow: /

User-agent: PetalBot
Allow: /

User-agent: Diffbot
Allow: /

User-agent: Timpibot
Allow: /

User-agent: ImagesiftBot
Allow: /

Sitemap: https://www.yellow3d.it/sitemap.xml