https://github.com/ai-robots-txt/ai.robots.txt

https://github.com/ai-robots-txt/ai.robots.txt/blob/main/robots.txt

### Using .htaccess
``` .htaccess
# Block bot traffic from certain user agents
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} (Amazonbot|SemrushBot|meta-externalagent|Bytespider) [NC]
RewriteRule .* - [R=503,L]
```