Saros Mod Checker
by Sarocesch
Saros Mod Checker is a server-side check that verifies the mods and resource packs a player's client runs before the player can stay on the server.
What it does
The mod compares the mods and active resource packs on a joining player's client against a configurable blacklist. Players carrying listed content are disconnected automatically. Verification uses SHA-256 hashes, so a file is matched on its exact contents rather than its name alone. Because the check lives on the server, players join without installing anything, and only the server needs the mod.
The blacklist is a JSON file that server owners can edit to list mod names and hashes. Server staff with OP Level 2 can view the mods and resource packs installed on any connected player's client. Files are published for Forge and NeoForge, both for 1.20.1, and the mod is released under All rights reserved, so it is not open source.
Key features
Mod verification
Mods installed on a connected client are checked against the blacklist as the player joins.
Resource pack checking
Active resource packs are validated alongside mods, giving full content verification of the client.
SHA-256 hash matching
Files are identified by their exact SHA-256 hash, so a renamed copy of blacklisted content is still caught.
Editable blacklist
A JSON configuration file lists blacklisted mod names and hashes, and the server owner edits it directly.
Client inspection
Operators can see which mods and resource packs a connected player's client has installed.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Fair play on a server
Server owners who want to keep forbidden content off their world can have it checked at login, without asking players to report their setup.
Who it’s for: Server owners and administrators who run Forge or NeoForge 1.20.1 servers and need to control which client mods and resource packs players may use.
How it compares
Item Sanitizer is a Forge, server-side only mod for 1.20.1 under All rights reserved, so it runs on the same side as Saros Mod Checker but deals with items. CheckYourMods targets NeoForge 1.21.1, is client and server, and is open source under the MIT License. PackPing covers Fabric and NeoForge 1.21 – 26.2, is client-side only and is open source under the MIT License, so it is not an option for a 1.20.1 Forge server.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Saros Mod Checker | Forge and NeoForge | 1.20.1 | Server-side only | 2026-01-25 |
| Item Sanitizer | Forge | 1.20.1 | Server-side only | 2026-06-21 |
| CheckYourMods | NeoForge | 1.21.1 | Client and server | 2026-01-10 |
| PackPing | Fabric and NeoForge | 1.21 – 26.2 | Client-side only | 2026-06-18 |
Questions
Does Saros Mod Checker need to be installed on players' clients?
Which loaders does Saros Mod Checker support?
What is required to use the client inspection feature?
In the catalog
Saros Mod Checker is one of 8,016 Management mods on ModsFinder, and one of 2,698 Management mods for Forge. 34,764 mods support Minecraft 1.20.1.
More from Sarocesch
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What the author says
The Saros Mod Checker is a server-side mod that verifies client mods and resource packs when players join your server. It checks all installed mods and active resource packs against a configurable blacklist, automatically disconnecting players who have forbidden content installed. - Mod Verification 🔍 …
Official listing
- Modrinth page
- modrinth.com/mod/saros-mod-checker
- Owner
- Sarocesch
- Published
- 2026-01-21
- Updated on Modrinth
- 2026-01-25
- Facts verified
- 2026-10-15