IDoTheBlacklist
by IDoTheHax
With IDoTheBlacklist installed, a server checks each connecting player against a shared ban list and refuses entry to anyone found on it.
What it does
The mod is a server-side client for a centralized blacklist API run by IDoTheHax. When a player joins, the server queries the API and denies entry if the player appears on the list, so one ban can apply across every participating server. Blacklist data is stored and managed on the API endpoint, and participating servers read the most recent version of it. The API key is set in the server configuration, and the mod requires it to communicate with the blacklist API.
Fabric API is required, and the mod is published for Fabric only, with files covering 1.21 – 1.21.4. Server owners who also run Paper, Spigot or Bukkit can use the same system on those platforms. Only the server needs it, and players join without installing anything. The mod is not open source, though the source code and issue tracker are public, and it is released under All rights reserved.
Key features
Automated blacklist checks
Connecting players are checked against the centralized blacklist as soon as they join the server.
Network-wide bans
Entries come from an external API, so a ban can be enforced on every server that uses the system.
Operator notifications
Server operators are told about each blacklist check and the action taken as a result.
Secure API key
The API key is stored on the server and used to access the blacklist API.
Gallery
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
Use cases
Community networks
Groups of servers that share a player community can apply one ban list across all of them.
Who it’s for: Server owners and administrators who run several servers that want to share a ban list. Single servers that manage their own bans without an external list have less use for it.
How it compares
InvDeath Mod is a Fabric server mod for 1.21.1 under the MIT License and is not open source. OpenOPs is a NeoForge server mod covering 1.21.1 – 1.21.11 and is open source under the MIT License. MobsFilter is a Fabric server mod for 1.21.11 and is open source. IDoTheBlacklist differs by depending on the API for shared bans rather than handling a single server's own rules.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| IDoTheBlacklist | Fabric | 1.21 – 1.21.4 | Server-side only | 2025-03-08 |
| InvDeath Mod | Fabric | 1.21.1 | Server-side only | 2026-05-25 |
| OpenOPs | NeoForge | 1.21.1 – 1.21.11 | Server-side only | 2026-02-19 |
| MobsFilter | Fabric | 1.21.11 | Server-side only | 2026-03-21 |
Questions
Does IDoTheBlacklist need Fabric API?
Does a player need to install the mod?
Where does the blacklist data come from?
In the catalog
IDoTheBlacklist is one of 5,392 Social mods on ModsFinder, and one of 4,084 Social mods for Fabric. 17,979 mods support Minecraft 1.21.4.
More from IDoTheHax
Similar mods
What the author says
One of the key principles behind the IDoTheBlacklist system is transparency and collaborative management. The configuration file for IDoTheBlacklist is located at config/idotheblacklist.json.
Official listing
- Modrinth page
- modrinth.com/mod/idotheblacklist
- Owner
- IDoTheHax
- Published
- 2025-03-04
- Updated on Modrinth
- 2025-03-08
- Facts verified
- 2026-10-15