Hey! I’m excited to share BossTimerMod, a Fabric mod that lets you create and manage server timers with boss bars, messages, and command triggers. Perfect for events like restarts, boss fights, or scheduled server actions.

• /bossbartimer command to manage timers.
• Fully configurable timer durations, messages, and triggers.
• Before and After commands for custom actions.
• Boss bar display for all players, with countdown.
• Tab completion for timer names.
• Safe reload: cancels running timers before loading config.
• Works with Fabric 1.21.1 and LuckPerms permissions.

1. Make sure you have Fabric Loader 0.16.10+ and Fabric API 0.116.1+ installed for Minecraft 1.21.1.
2. Download the mod .jar (example):

   bossbartimer-2.0.1-1.21.1.jar
   

3. Place the .jar in your mods folder.
4. Start the server or client.

Create a file at config/bosstimer_commands.json:

{
 "restart": {
 "duration": 60,
 "bossbar_message": "🕳️ Restart in %s seconds",
 "before": [
 "tellraw @a {\"text\":\"[ALERT] \",\"color\":\"red\",\"bold\":true,\"extra\":[{\"text\":\"An unplanned server restart is about to take place. Please plan accordingly.\",\"color\":\"yellow\"}]}"
 ,"title @a title {\"text\":\"Restart Incoming!\",\"color\":\"gold\"}"
 ],
 "after": [
 "tellraw @a {\"text\":\"[ALERT] \",\"color\":\"yellow\",\"bold\":true,\"extra\":[{\"text\":\"The server is restarting soon.\",\"color\":\"yellow\"}]}"
 ,"execute as @a run stopbattle @s"
 ],
 "triggers": {
 "30": { "message": "🕳️ 30 seconds remaining." },
 "10": { "message": "🕐 10 seconds!" },
 "5": { "message": "⚠️ Restarting soon..." }
 }
 }
}

• duration → timer length in seconds.
• bossbar_message → shows in the boss bar, %s replaced by remaining seconds.
• before → commands executed at the start of the timer.
• after → commands executed after the timer ends.
• triggers → optional messages at specific seconds.

• Start a timer:

  /bossbartimer start <timerName>
  

• Cancel all timers:

  /bossbartimer cancel
  

• Reload configuration:

  /bossbartimer reload
  

• bossbartimer.run → Start or cancel any timer.
• bossbartimer.reload → Reload configuration safely.

Use LuckPerms or another permissions plugin to assign these to your staff.

• Created and maintained by FreeSpinner.
• Created and Primarily used on Cobblemon Vulkan.

• Test timers on a small server first to make sure commands and messages are correct.
• Always include %s in bossbar_message to show countdown.
• Use triggers to alert players before the timer ends for critical events.