I think this a good idea for Firewall: user Pro+ can use firewall for blocking visitor with a specific useragent, i like it.
Moving this to the product feedback / suggestion area.
Ok done! It’s brand new, so please open a support ticket if you think you found a bug https://api.cloudflare.com/#user-agent-blocking-rules-properties
Wow, thanks but i think better solution is use a UI in Firewall, for blocking 1 useragent i need too code write, api are complicated =(
We may add UI support in a later release, but for now it is an API only feature.