We will show here how create a simple key (we will tick all modules).
Clic on the button "Add"
(Then the key is created, it looks like for ex: 09a18316b15401f7c9f86b1540256eb) And a page showing the list of API keys (your toon keys and/or guild key).
To copy a key, clic on the key (highlighted) to edit mode - it's more easy to copy it (CTRL+A to select all, CTRL+C).
Add an app, create a key for it (don't forget the never expires), then paste the key value (such 09a18316b15401f7c9f86b1540256eb) in the app "enter API key" form - each app has its own place.
Out of game, you can find your API key at https://app.ryzom.com/app_ryzomapi/index.php?from_index=1
Here we will add the Fametracker app. It's help your to track your fames (faction, tribes, find NPC...).
MAJ+W on top, clic on "APP ZONE" (not Add app, that is for devs) go down and find the app you want :
The first check box is WEB (out of game) then it's IG (In Game), you can check both :p
The icon is added in the webapp toolbar
Menu (using a browser, out of game, because I think it's much more handy)
Go to the 1st link on top right "Me" then Settings
-> choose the languages
-> API key (paste here your key with CTRL+V)
Wait a bit for syncro (10 or 20 mn).
It's done :)