User-agent: *
Allow: /

# Google crawlers
User-agent: Googlebot
Allow: /

User-agent: Google-Extended
Allow: /

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

# AI crawlers — explicitly allowed
User-agent: GPTBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: OAI-SearchBot
Allow: /

User-agent: ClaudeBot
Allow: /

User-agent: Claude-Web
Allow: /

User-agent: anthropic-ai
Allow: /

User-agent: PerplexityBot
Allow: /

User-agent: YouBot
Allow: /

User-agent: cohere-ai
Allow: /

User-agent: meta-externalagent
Allow: /

User-agent: Applebot-Extended
Allow: /

User-agent: AI2Bot
Allow: /

User-agent: Diffbot
Allow: /

User-agent: Bytespider
Allow: /

# Block SEO scrapers
User-agent: AhrefsBot
Disallow: /

User-agent: SemrushBot
Disallow: /

User-agent: MJ12bot
Disallow: /

User-agent: DotBot
Disallow: /

Sitemap: https://pipesizecalculator.com/sitemap.xml