
Eye Spy
I don't know my version or loader



Archived
Eye Spy has been archived so I can stay focused on a smaller amount of mods for now. It was mainly intended to test a server-side library I was working on, and will need a basic full rewrite to bring to modern versions, ideally with Polymer as a backend instead.
Eye Spy
Server-sided ping and rangefinding functionality for the Spyglass, targeting Fabric & Quilt.
Features
All features do not require any installs on the client, and can be configured either in-game via the /eyespy config command
by operators, or by changing the config file config/eyespy.json5.
Ping


Players can now ping blocks and entities with the spyglass using a hijacked 'Swap Item with Offhand' keybind. This shows a glowing outline to them and surrounding players, as well as the distance, and optionally the description of the target. They can also double-tap the key to show a flashing red hazard ping.
For more details, see the Wiki Page.
Client Install
If a player installs Eye Spy on their client, then they will gain a dedicated keybind for pinging instead of overriding the 'Swap Item with Offhand' functionality. This is completely optional, and doesn't affect other players.
Rangefinder

When using the spyglass, players now see the distance to the hovered block or entity, along with their names if available.
For more details, see the Wiki Page.
Versions
Currently targeting 1.20.4, 1.20.2, 1.20.1 and 1.19.4. As this mod heavily uses Display Entities, a port to versions before would most likely require a rewrite.
Requirements
Bundles several JackFredLib modules and Server Translation API.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.2, 1.21.3, 1.21.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as eyespy-1.3.7+1.21.2.jar — drop this file into the mods folder
- Download size: 957 KB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.