Pen Tracker
by tll_zed
Pen Tracker is a Fabric utility for the PEN Server that sits in a corner of the screen and tracks progress, prices and quests without sending anything to the server.
What it does
The client-side mod was built for the PEN server and rebuilt from scratch for the third season. It follows rank, prestige and rebirth progression, along with custom fishing, baking, drug, sewer and vault activity. Progress is read automatically from the tab list, and the next rank's cost, the ranks left and the next prestige token reward are shown with the current balance.
Price tracking covers fish, cookies, blocks and drugs, using the server's exact sell values and boosts. When the server changes a price, the next sale corrects the figure automatically. A mining overlay shows the sell value of everything in the inventory, the Commissary prices and what is sitting in vaults and the backpack. Money is tallied as a rolling hourly total, and sellall, trader, AutoSell, sewer kills, Auction House sales and drug sales feed into it, with cigarettes per hour reported separately.
Pen Tracker needs Fabric API. Mod Menu is optional and only adds a configuration entry point. Files are published for Fabric across 1.21.10 and 1.21.11, and the latest file is 2.0.6+1.21.11 for 1.21.11, dated 2026-10-12. The code is released under the Creative Commons Attribution Non Commercial No Derivatives 4.0 license, so the mod is not open source.
Key features
Rank and prestige progress
Rank, prestige and rebirth are read from the tab list, with the cost and reward of the next step shown.
Exact sell values
Fish, cookies, blocks and drugs are priced with the server's values and boosts, and corrected after price changes.
Inventory and vault overlay
A mining overlay values everything in the inventory, Commissary prices, vaults and the backpack.
Session earnings
Money is tracked as a rolling hourly total, with sales from sellall, trader, AutoSell, sewers and the Auction House.
Fishing and cookie modes
Fishing mode counts fish and keys earned, flagging fish that are not the player's; cookie mode shows batches and prices across baking steps.
Drug lab and quests
The drug lab shows held drugs and the cheapest upgrade, while quest progress and rewards update live.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Optional 1
Use cases
Who it’s for: Players on the PEN server who want progress, prices and quest status visible on screen while they play.
Questions
Does Pen Tracker need to be installed on the server?
Which loader does Pen Tracker use?
Does Pen Tracker change anything the server receives?
In the catalog
Pen Tracker is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
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What the author says
A client-side Fabric mod built specifically for The PEN Server — rebuilt from the ground up for Season 3, with rank, prestige and rebirth progression, custom fishing, baking, drugs, sewers and vaults. PEN Tracker sits quietly in the corner of your screen and keeps track of everything that matters. It follows your…
Official listing
- Modrinth page
- modrinth.com/mod/pen-tracker
- Owner
- tll_zed
- Published
- 2026-03-31
- Updated on Modrinth
- 2026-10-12
- Facts verified
- 2026-10-15