mc-authn: Authenticator for Minecraft with Microsoft

Installation

pip install mc-authn

Usage

1. Create Azure Token

(You can follow this guide for more details)

1. Sign in to the Azure Portal
2. Click "Azure Active Directory" (the icon should look like Ramiel from EVA 🤔)
3. Click "App registrations" on the left navigation menu
4. Click "New registration" on top left
5. Give it a name
6. For "Supported account types," select "Personal MS accounts only"
7. For "Redirect URI", select "Web" and type "http://localhost:18275"
8. Now you should be in the overview page of your app!
9. You should see a field "Application (client) ID", copy that somewhere
10. Click "Certificates & secrets" on the left navbar
11. In the "Client secrets" tab, click "New client secret"
12. Give it a description
13. For "Expires" select "24 months"
14. Click "Add"
15. There should be "Value" and "Secret ID", copy "Value"
16. Write this in ~/.config/mc-auth/auth_config.yml:

ClientID: Paste the "Application (client) ID" here
ClientSecret: Paste the "Value" you copied here

2. Login!

You can now run mc-authn to login! After logging in, it will create a text file ~/.config/mc-auth/mc-token.txt containing your minecraft token.

In your start script for minecraft, add the --accessToken argument to the java line used to start minecraft:

mc-authn

export name=$(< ~/.config/mc-auth/mc-name.txt)
export uuid=$(< ~/.config/mc-auth/mc-uuid.txt)
export auth=$(< ~/.config/mc-auth/mc-token.txt)

java ... net.minecraft.client.main.Main ... \
    --accessToken ${auth} \
    --uuid ${uuid} \
    --username ${name}

3. Start Minecraft!

You can now start minecraft!