mangamanager might help

Awesome work! Hope kbin gets API soon so it’ll be possible there

No. Just an example, but I used this sub after editing my comment

With Lemmy it’s !technology@beehaw.org
From kbin it’s the same but with an @ instead of !. @technology
IDK how others have search set up. There may not be a way

Best advice is not to expose it publicly.
If you need access outside your LAN try using a VPN to your network with wireguard (wg-easy is nice) or tailscale (there are others as well).

If it’s using a domain/subdomain make sure you use secure usernames and passwords, or things like authentik, authelia and the like to buff up security.