So, the plug in does not appear to be loading. I had to Manually create DiscordCore.json aand added the following:

{
  "Discord API Key": "", // API Key for your Discord bot "Discord Join Code": "", // Join code for your Discord server "Enable Commands In Bot Channel": true, //Enable allowing certain bot commands in a specifed bot channel "Bot Channel Name": "bot" // Bot channel to allow certain commands in "In Game Chat Command": "dc", "Discord Bot Join Command": "join", "Discord Bot Plugins Command": "plugins", "Discord Bot Help Command": "help", "Discord Bot Leave Command": "leave", "Discord Bot Commands Command": "commands", "Enable Discord Server Join Notification": true, "Enable Linking Discord To Rust": true, "Use DiscordAuth": false, "Use DiscordConnect": false, "Use External Hooks": false
}​

Obviously the format is incorrect for the above .json script. I have entered the API, and the join link, I also set the "Bot channel Name" to the name of the private admin chaannel on my discord. Still plug in fails to run.

Merged post

I dragged and droped DiscordCore.cs into my Plugins Directory. Had to Manually Create the DiscordCore.json file iin oxide/ config. Placed the following script copied from the page into it :

{
  "Discord API Key": "MY BOT'S API KEY", // API Key for your Discord bot
  "Discord Join Code": "h    t       t     p    s     :      //                disc    ord.g   g/prN           p9     qK", // Join code for your Discord server
  "Enable Commands In Bot Channel": true, //Enable allowing certain bot commands in a specifed bot channel
  "Bot Channel Name": "rust-admin-logs" // Bot channel to allow certain commands in
  "In Game Chat Command": "dc",
  "Discord Bot Join Command": "join",
  "Discord Bot Plugins Command": "plugins",
  "Discord Bot Help Command": "help",
  "Discord Bot Leave Command": "leave",
  "Discord Bot Commands Command": "commands",
  "Enable Discord Server Join Notification": true,
  "Enable Linking Discord To Rust": true,
  "Use DiscordAuth": false,
  "Use DiscordConnect": false,
  "Use External Hooks": false
}​

That isn't valid JSON, you can't have comments like that in JSON. You'll need to let the plugin generate the default configuration, which it will when the plugin is successfully loaded. Make sure you have the required dependency installed (the Discord extension).