Curios API Mod for Minecraft 1.20.4, 1.20.1, 1.19.2 and 1.18.2, is a necessary add-on for installing and running some Minecraft mods. In other words, it will not be necessary for all of them, but for some of them it will be essential for their functioning. In the case of installing only Curios API, it would not be of any use, as it is considered an add-on.
As it is a necessary add-on for the installation of other mods, it would be useless on its own, as it will depend on other mods to be useful. To run a game with the Curios API it will be essential to follow the steps shown in the next paragraph.
The first thing to do is to download and install Forge, which will be necessary to be able to run a game with most Minecraft mods. Afterwards, it will be possible to install the Curios API, which should be located inside the “mods” folder, inside the famous game localisation.