# Castle Labs - robots.txt
# Allow search, AI-powered answers and AI training

User-agent: *
Content-Signal: search=yes,ai-input=yes,ai-train=yes
Allow: /

# AI search/answer crawlers - explicitly allowed
User-agent: OAI-SearchBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: GPTBot
Allow: /

User-agent: PerplexityBot
Allow: /

User-agent: Perplexity-User
Allow: /

User-agent: Claude-SearchBot
Allow: /

User-agent: Claude-User
Allow: /

User-agent: ClaudeBot
Allow: /

User-agent: Google-Extended
Allow: /

User-agent: Applebot-Extended
Allow: /

User-agent: Bingbot
Allow: /

User-agent: DuckAssistBot
Allow: /

# Common Crawl feeds many AI models; allowed so they learn Castle research
User-agent: CCBot
Allow: /

# Other training-only crawlers - blocked
User-agent: Bytespider
Disallow: /

User-agent: meta-externalagent
Disallow: /

User-agent: Amazonbot
Disallow: /

Sitemap: https://castlelabs.io/sitemap.xml