Conan Exiles offers Dreamworld DevKit which can be used to create mods. This guide shows two different ways to use them in single player and multiplayer.
How to add mods to a single
Just take the mod file or folder and move it to Conan Exiles \ ConanSandbox \ Mods.
How to add mods to multiplayer
There are two ways, the first works on the client side and the second on the server side. If you want to use client side mods on a different server, it is important that the server can run them. Or else you won't be able to connect. The server will tell you the list of mods that are missing for your game. Secondly, create a server with different mods and allow other players to use them. To do this, follow the instructions below.
Collect all mods with .pak extension and move them to a special folder on the server. For example ServerModFolder / ConanSandbox / Mods /.
Next, in the same folder, you will need to create a text file, which will contain a list of all mods with their full paths. For example modlist.txt. The format should be below. The name of the mod with its extension and an asterisk in front of the path.
* ServerModFolder / ConanSandbox / Mods / Mod.apk
* ServerModFolder / ConanSandbox / Mods / Mod2.apk
* ServerModFolder / ConanSandbox / Mods / Mod3.apk
Then, when clients try to connect to the server, they will receive a message box listing the required modifications. Without mods, clients will not be able to connect. You can also do this with PingPerfect Server as instructed in the user manual. You can use this tool to create a dedicated Mod folder that can be used on the server. The process is pretty straightforward. Install the client, create the server, and then access the ConanSandbox folder through the file manager. Create a Mods folder in it and upload all your .pak and modlist.txt files. Reboot the server.
