User-agent: * Allow: / # AI training crawlers — blocked (do not train on this content) User-agent: GPTBot Disallow: / User-agent: CCBot Disallow: / User-agent: Google-Extended Disallow: / User-agent: Meta-ExternalAgent Disallow: / User-agent: ClaudeBot Disallow: / # AI retrieval/search crawlers — allowed (eligible for citation) User-agent: OAI-SearchBot Allow: / User-agent: ChatGPT-User Allow: / User-agent: PerplexityBot Allow: / Sitemap: https://www.bluespine.com/sitemap-index.xml