robots.txt:

User-agent: anthropic-ai
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: FacebookBot
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: omgilibot
Disallow: /

User-agent: omgili
Disallow: /

Refs