Too Long; Didn't Read
We'll build an internal tool that your team can use to get information about your customers using a slash command. I'm not going to teach you how to build a Slack app for the Slack App Directory. You need to use Ngrok to connect your Slack workspace (on the internet) to your locally-running Slack bot (on your machine). It has a free plan, but the basic plan is affordable and extremely useful for building Slack bots.