Haha ja ! mIRC was a great client with excellent scripting capabilities !
Especially when you were running "Kuang 11"[2], which developed from a client script into a shared library, written in some compiler language and offering, itself, a script API, in addition to the client's :-)
I don't know how many times some idiots tried to take over a channel and Kuang 11 (or a sister project, it was, I think, which used the K11 API) reacted so fast, that our clients stood rock solid and could not be flooded, etc.
[1]: https://www.amigaos.net/software/115/amirc [2]: http://de4.aminet.net/comm/irc/KuangEleven3Gm.readme