I want to get all the rust items from the steam api with current steam price. But it seems like that there is no such api endpoint for rust.

I can get the schema of all the csgo skins (without price):

https://api.steampowered.com/IEconItems_730/GetSchema/v2/?key=XXXXXXXXXXXXXXXXXX

It seems like that IEconItems_APPID is only for some games (here csgo).

And if I can only get the schema of all rust skins do I need to send a request for every skin price?