F3 Permissions

F3 Permissions is a NeoForge 1.21.1 mod for servers that want to restrict Minecraft's debug tools without relying on datapacks.

It keeps full F3 information behind a configurable permission policy and can also close the debug chart hotkeys, including the F3 + 1 profiler pie chart, when the player is in reduced-debug mode.

Features

• Per-player full F3 access using vanilla reduced-debug packets.
• F3 + 1 profiler pie chart lock for clients with the mod installed.
• Optional locks for F3 + 2 FPS/TPS charts and F3 + 3 network charts.
• Configurable always-allowed gamemodes.
• Configurable entity tag for survival/adventure access.
• Auto-grant and auto-revoke lists by player name or UUID.
• Runtime commands for status, survival access, grants and revokes.
• Dedicated-server safe; chart locking requires the mod on the client.

Requirements

• Minecraft 1.21.1
• NeoForge 21.1.x
• Java 21

Install on the server to enforce full F3 restrictions. Install on clients too if you want the profiler pie chart and other debug charts locked.

Commands

/nof3 status
/nof3 survival on
/nof3 survival off
/nof3 survival toggle
/nof3 grant <players>
/nof3 revoke <players>

Default Policy

• Creative and spectator players can use full F3.
• Survival and adventure players get reduced debug info.
• Tagged players can use full F3 only when /nof3 survival on is active.
• The default permission tag is nof3.debug.
• F3 + 1, F3 + 2 and F3 + 3 charts close while reduced debug info is active on clients with this mod installed.