
Slackbridge
A simple Fabric Slack <-> Minecraft chat relay
About this Mod
Slackbridge
Slackbridge is a Fabric Minecraft <-> Slack chat relay for Minecraft 1.21.


Download
Slackbridge is available to download on:
Features
- Relay
- Relay messages from Slack to Minecraft (excludes threads)
- Relay messages from Minecraft to Slack
- Displays player join/leave messages in Slack
- Displays death messages in Slack
- Displays advancement messages in Slack
- Displays server start/stop messages in Slack
- Slack Commands
/slackbridge-info- Displays online players and performance stats
- Minecraft Commands
/shrug <message>- Appends a shrug to the end of the message
Setup
Create a Slack App
- Go to Slack API and create a new app in your workspace using the
following manifest. You may want to change the bot name and the command/slackbridge-infoto something else. If you are using this in the Hack Club Slack workspace, you must change the
command name.
{
"display_information": {
"name": "SlackBridge"
},
"features": {
"bot_user": {
"display_name": "SlackBridge",
"always_online": false
},
"slash_commands": [
{
"command": "/slackbridge-info",
"description": "See current server status",
"should_escape": false
}
]
},
"oauth_config": {
"scopes": {
"bot": [
"channels:history",
"chat:write",
"chat:write.customize",
"users:read",
"commands"
]
}
},
"settings": {
"event_subscriptions": {
"bot_events": [
"message.channels"
]
},
"interactivity": {
"is_enabled": true
},
"org_deploy_enabled": false,
"socket_mode_enabled": true,
"token_rotation_enabled": false
}
}
- Once you have created the app, go to the "OAuth & Permissions" page and install the app to your workspace.
- Note down the Bot User OAuth Token.
- Go to the Basic Information page and create an app token. Note down the app token.
- In Slack, invite the bot to the channel you want to relay messages to.
- Right click on the channel and click "Copy Link". Note down the channel ID from the link. (It should look like
C01A2B3C4D5) - That's it on the Slack side! Let's get your server setup now.
Setup the Mod
- Install the mod on your server by adding the jar to the mods folder.
- Restart the server to generate the config file.
- Open the config file (
config/slackbridge.json) and fill in the following fields:slackBotToken- The Bot User OAuth TokenslackAppToken- The App TokenrelayChannelId- The Channel IDinfoCommand- The command name you set in the manifest. This will default to/slackbridge-info- if you didn't change the manifest, you can leave this alone.
- Restart the server again and you should be good to go!
Available Versions
How to Install Slackbridge on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Slackbridge". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Slackbridge server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Slackbridge compatible with fabric?
Slackbridge officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Slackbridge – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Slackbridge consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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