MUC (Markov User Cloner) is a now-retired Discord bot I worked on throughout 2020. While many bots existed to facilitate interaction with Markov chains, I wanted to create an easy-to-modify open-source example to test the waters of public Discord bot development.

With v1.6, three commands are present:

,m clone @user will clone a user based on their ID. The bot loops over the last sent messages in the channel the command was issued to generate a Markov chain, filtering based on ID. It will cap off at roughly 250 (or whatever max in the config is set to) of a particular user's messages or if there are no messages left.

,m clone all will clone everyone in a channel, similar to the clone command. It does not currently support regen.

,m regen will use the last Markov chain created for your server and generate another reply.

,m prefix (prefix) will change the prefix for your server; it must be ten or fewer characters.

,m help will send a message in chat concisely explaining this information.

After testing a few potential libraries for generation, I decided upon js-markov. It's a bit more resilient to longer strings. With it, I've added a new footer to the bottom of each generated message:

M: - Shows the number of messages used to create the chain.

O: - The Markov chain order used.

L: - The maximum length for generated messages.

To run it yourself, you must first install Node.JS (working on 14.5). Next, download and unzip the repo, and create a .env file with your bot's token, like this: TOKEN="". After that, run npm install and finally, node index.js. You should see a message confirming the bot has logged in; please see below for an example.

MUC logged in as: MUC#0108
cloning User#0000 in Guild Nickname
regenerating User#0000 in Guild Nickname

(Information on guilds & users that use the main commands are printed to console)