Custom Chat Alerts
by njkleb
Custom Chat Alerts lets a player define watch rules that fire a sound or text cue when a matching chat message arrives, and it runs on the client alone.
What it does
Each alert is a rule built in the in-game Chat Alerts screen. A rule can match a plain phrase or a regular expression, and it can be given a name for quick identification. When a matching message reaches the chat, the rule plays the chosen sound and shows its display text. Rules can also detect a mention of the player's own name, with case-sensitivity turned off, and an event such as a server start announcement can trigger a delayed reminder, for example a 300-second countdown.
The mod is a Fabric client mod with a single version, 1.21.11, and its Fabric file is dated 2026-07-03. It is client-side only, so servers do not need it and players join without installing anything. The screen opens from a key binding in the Chat Alerts category, which is unbound by default, and it can be reached from anywhere including the main menu. The code is under the MIT License, but the project is not open source. Fabric API is needed as a dependency for the Fabric build.
Key features
Custom chat rules
Players create alerts from incoming chat messages and set each one to a sound and a text output.
Regex and delayed triggers
Alerts accept regular expressions, match time-remaining messages such as a number of seconds left, and can start a timed reminder.
Row management
Alerts can be enabled or disabled one at a time without deleting them, reordered with per-row buttons, and sorted so disabled rows move down.
Color-coded list
Rows are tinted green or red to show at a glance which alerts are active.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who follow a server's chat announcements and want a sound or reminder for specific messages. The mod suits anyone who plays in multiplayer or on busy servers where important messages scroll past quickly.
How it compares
Totem Reminder is client-side only and published under the MIT License, but it is not open source and covers 1.21 – 1.21.11. LowDurabilityWarning is also client-side only and not open source, under the MIT License, with files for 1.21.1 – 1.21.11. FishyAddons is client-side only, open source under the GNU General Public License v3.0 or later, and covers 1.21.5 – 26.2, a wider span than this mod's single version.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Custom Chat Alerts | Fabric | 1.21.11 | Client-side only | 2026-07-03 |
| Totem Reminder | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-05-20 |
| LowDurabilityWarning | Fabric | 1.21.1 – 1.21.11 | Client-side only | 2026-06-08 |
| FishyAddons | Fabric | 1.21.5 – 26.2 | Client-side only | 2026-08-14 |
Questions
Does Custom Chat Alerts need Fabric API?
Does the server need Custom Chat Alerts installed?
How is the alert screen opened in Custom Chat Alerts?
In the catalog
Custom Chat Alerts is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
A client-side Fabric mod that lets you create custom chat notifications through a fully in-game UI. Set a phrase or regex pattern to watch for, choose a sound, and the mod plays it whenever a matching message appears. Works on any server with no server-side installation required. Bind a key to "Open Chat Alerts"…
Official listing
- Modrinth page
- modrinth.com/mod/custom-chat-alerts
- Owner
- njkleb
- Published
- 2026-07-03
- Updated on Modrinth
- 2026-07-03
- Facts verified
- 2026-10-15