trp_ and is shown in full only once, when you create it.
Create a key
Open Settings, API keys in the Trepa app, then:1
Open the API keys page
Click + Create key or Create your first key.

2
Name the key
Pick a label you will recognise later (for example 
Trepa bot).
3
Copy the key
Copy the value and store it somewhere safe. You will use it in Quickstart.
