2026 B2B SaaS robots.txt Blueprint: Live AI Search Bots vs Model Training Bots
Updated 2026-10-31 · Live reference file: https://asostudio.dev/robots.txt · Audited across 564 SaaS domains
Security teams frequently block GPTBot, ClaudeBot, or Cloudflare "AI Scrapers" globally without realizing they also severed live bottom-of-funnel buyer retrieval. OpenAI, Anthropic, and Perplexity separate real-time search/citation agents from background corpus training crawlers.
1. Live Search & Buyer Citation Bots (Always Allow)
| User-Agent | Engine | Commercial Role |
|---|---|---|
OAI-SearchBot & ChatGPT-User | ChatGPT Search | Fetches live pricing, docs & comparisons during buyer prompts |
Claude-SearchBot & Claude-User | Claude Web Search | Grounds enterprise software evaluations & citations |
PerplexityBot & Perplexity-User | Perplexity | Real-time citation index & interactive Pro Search |
2. Copy-Paste B2B SaaS robots.txt Block
User-agent: OAI-SearchBot Allow: / User-agent: ChatGPT-User Allow: / User-agent: Claude-SearchBot Allow: / User-agent: Claude-User Allow: / User-agent: PerplexityBot Allow: / Sitemap: https://yourdomain.com/sitemap.xml
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