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DISCLAIMER: This project is experimental
ModObserver, as the name suggests, observes, which mods are loaded, and upon joining a server, sends those mods to the server. The server owner can adjust, which mods are allowed and which are not.
When you try to join a server, that requires you to have ModObserver, you will get a kick message similar to this one:
For server owners: if you want ModObserver on your server, download this plugin: https://modrinth.com/plugin/mod-observer-plugin
All Versions
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[3.0.2] Mod Observer 3.0.2
by Sn0wix on Dec 22, 2025
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Port to mc 1.2.11
[3.0.2] Mod Observer 3.0.2
by Sn0wix on Nov 29, 2025
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Improved json data handeling
[3.0.2] Mod Observer 3.0.2
by Sn0wix on Nov 29, 2025
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Improved json data handeling
[3.0.1] Mod Observer 3.0.1
by Sn0wix on Nov 27, 2025
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Fixed compatibility issues with mc 1.21.9+
[2.1.3] Mod Observer 2.1.3
by Sn0wix on Oct 07, 2025
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Port to 1.21.9+
[2.1.3] Mod Observer 2.1.3
by Sn0wix on Oct 06, 2025
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Improved modid tampering detection and increased mc version range
[2.1.2] Mod Observer 2.1.2
by Sn0wix on Oct 02, 2025
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Port to 1.21.7+, so servers with viaversion can support the latest mc versions.
[2.1.2] Mod Observer 2.1.2
by Sn0wix on Oct 02, 2025
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Port to 1.20.5 and 1.20.6
[2.1.2] Mod Observer 2.1.2
by Sn0wix on Oct 01, 2025
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Fix another false positive with tampering detection
[2.1.1] Mod Observer 2.1.1
by Sn0wix on Aug 22, 2025
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Change license and mc version range
[3.0.0] Mod Observer 3.0.0
by Sn0wix on Aug 18, 2025
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Add:
Update:
- mod management gui
- server config generator
- file verification
Update:
- networking
[2.1.0] Mod Observer 2.1.0
by Sn0wix on Jun 28, 2025
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Ported to 1.21.4+ and fixed packet encryption
[2.0.3] Mod Observer 2.0.3
by Sn0wix on Dec 03, 2024
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Fixed:
- Xaero's minimap crash
[2.0.2] Mod Observer 2.0.2
by Sn0wix on Dec 01, 2024
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Fixed:
- more compatibility issues
[2.0.1] Mod Observer 2.0.1
by Sn0wix on Nov 21, 2024
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Fixed:
- frozenlib crash
[2.0.0] Mod Observer 2.0.0
by Sn0wix on Nov 19, 2024
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Added:
- modid tampering check
- packet encryption
[1.0.0] Mod Observer 1.0.0
by Sn0wix on Nov 11, 2024
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1.20.5/6 port
This version is not able to send mods upon server request during play phase.
This version is not able to send mods upon server request during play phase.
[1.0.0] Mod Observer 1.0.0
by Sn0wix on May 04, 2024
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First version
