You can’t use typical IRC commands like /nick or use color codes on TMI. You can make an account for your bot to use, and that’s the name it will have. It can do ‘/me’ aka ACTIONS to make it’s chat color match it’s username color. To make HTTPS API calls and receive the JSON output will take a little bit of work but it is possible. (I do it.)
The general consensus I’ve seen here, is “Don’t use mIRC”
Since the API doesn’t have an uptime length you would have to create a function to do some math, or use someone else’s script to convert it to hours/minutes/seconds.
In mIRC you would make a simple trigger for !caster and then query the API using $1 as the mIRC variable for the word after !caster, so !caster Matt would link Twitch and the same idea for the last game.
For detailed help, message me. I’ll see what I can do!