Advancement Tweaker
Full Advancements look and reward customization
Screenshots
About this Mod
A server-side mod that allows you to customize any advancements look in chat, and what commands will be executed when the advancement is granted.
Here's how the config structure looks like:
Each json object inside the file is an advancement:
- The key is the advancement id.
- The "message" property has as value the message that will be displaied in chat, uses vanilla chat formatting and Placeholders for ${player} (The player's display name) and ${advancement} (The advancement display name and hover description).
- The "command" property has as value a list of commands that will be executed when the advancement is granted, uses Placeholder for ${player} (The player's display name).
You are free to use this in any modpack!
Available Versions
How to Install Advancement Tweaker 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 (1.20.2).
Install Mod
Open the mod browser in the dashboard and search for "Advancement Tweaker". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.2, 1.20.1, 1.19.4 (+2 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Advancement Tweaker 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 (1.20.2). You can switch loaders with one click in the panel.
Is Advancement Tweaker compatible with fabric and forge?
Advancement Tweaker officially supports fabric, forge for Minecraft 1.20.2, 1.20.1, 1.19.4. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Advancement Tweaker – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Advancement Tweaker 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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Rent Modded Server
Install Advancement Tweaker with just one click on your server.