User-agent: *
Allow: /
Allow: /llms.txt
Allow: /sitemap.xml

# OpenAI
User-agent: GPTBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: OAI-SearchBot
Allow: /

# Anthropic
User-agent: ClaudeBot
Allow: /

User-agent: anthropic-ai
Allow: /

# Google（搜尋 + AI Overviews）
User-agent: Googlebot
Allow: /

User-agent: Google-Extended
Allow: /

# Perplexity
User-agent: PerplexityBot
Allow: /

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

# Meta
User-agent: FacebookBot
Allow: /

# 其他常見 AI / 搜尋爬蟲
User-agent: Applebot
Allow: /

User-agent: Applebot-Extended
Allow: /

User-agent: cohere-ai
Allow: /

User-agent: YouBot
Allow: /

Sitemap: https://pdf.ericai.app/sitemap.xml

# LLM 可讀網站說明：https://pdf.ericai.app/llms.txt