Custom Message Blocker
by 3d_circuit1
Custom Message Blocker hides chat messages that contain phrases the player has listed, so unwanted lines stop cluttering the chat window.
What it does
The mod filters incoming chat by a list of blocked phrases. Each rule works in one of two modes. CONTAINS hides a message when the phrase appears anywhere inside it, while EXACT hides only messages that match the phrase as a whole. Rules can be added in the in-game config screen, which lets a player manage the list visually, or edited directly in the config file.
An on/off switch disables the whole filter without removing the rules. An optional setting shows a subtle action bar notification each time a message is blocked, so a player can confirm the filter is working. The mod runs entirely on the client and does not change how the server handles chat.
The mod requires Fabric API. It is released for Fabric only, across 15 release versions 1.21 – 26.1.2, with files for 26.1.2 as the latest build. The mod is licensed under the MIT License and is not open source.
Key features
Custom blocked phrases
Players add as many blocked words or phrases as they want, each one applied to the chat they receive.
Contains and exact modes
A rule can match a phrase anywhere in a message or only when the message equals the phrase exactly.
Global on/off switch
The whole filter can be turned off at once and turned back on without losing any configured rules.
Action bar alerts
An optional subtle notification appears in the action bar whenever a message is hidden.
Gallery
Compatibility
Latest build for each game version and loader.
26.x3 of 3 versions with builds
1.21.x12 of 12 versions with builds
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
Quieting a busy server
A player on a crowded multiplayer server can hide repeated spam lines or a recurring phrase without leaving the server.
Hiding specific words
Someone who finds certain words distracting can block them in chat while still reading everything else.
Who it’s for: The mod suits players on Fabric who want to hide specific chat messages on their own client. Because it runs only on the client, players can use it on any server without asking the server owner to install anything.
How it compares
ChatFilterV1 is also a client-side Fabric mod under the MIT License, but its files cover only 1.21 – 1.21.8. MuteIt is client-side on Fabric with an Apache License 2.0 license and covers 1.21.6 – 1.21.8, and it is not open source. Chat Filters is client-side on Fabric under the GNU General Public License v3.0 only, is open source and covers 1.21.9 – 26.2, which overlaps the newest builds of this mod.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Custom Message Blocker | Fabric | 1.21 – 26.1.2 | Client-side only | 2026-09-18 |
| ChatFilterV1 | Fabric | 1.21 – 1.21.8 | Client-side only | 2025-09-20 |
| MuteIt | Fabric | 1.21.6 – 1.21.8 | Client-side only | 2025-09-01 |
| Chat Filters | Fabric | 1.21.9 – 26.2 | Client-side only | 2026-07-27 |
Questions
Does Custom Message Blocker need Fabric API?
Does the server need this mod to block messages?
Which game versions are supported?
In the catalog
Custom Message Blocker is one of 5,392 Social mods on ModsFinder, and one of 4,084 Social mods for Fabric. 15,189 mods support Minecraft 26.1.2.
More from 3d_circuit1
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What the author says
Tired of certain words or phrases cluttering your chat? Custom Message Blocker lets you automatically hide certain chat messages containing (or exactly matching) phrases you don't want to see.
Official listing
- Modrinth page
- modrinth.com/mod/custommessageblocker
- Owner
- 3d_circuit1
- Published
- 2026-07-03
- Updated on Modrinth
- 2026-09-18
- Facts verified
- 2026-10-15