auto responser
by TWOCHEG
auto responser sends replies to chat messages that address the player, using an AI model reached through OpenRouter.
What it does
When a chat message contains one of the nickname variations set in the mod, the client creates a response with an AI model and sends it on the player's behalf after a chosen delay. Only the player's own client sends the reply, so no server-side install is involved. The mod receives chat messages and checks each one for the configured nickname variations.
Using the mod requires an API key from openrouter.ai, entered in the mod settings. The model is selected from a list of free models in the same settings screen. Until a key is set, the mod does not respond to messages. Settings are opened through Mod Menu, and Cloth Config API supplies the settings screen.
Installation needs Fabric, Cloth Config API and Mod Menu. auto responser is client-side only, so servers do not need it. Files exist for 1.21.4 and 1.21.5, and the latest build is 1.1.0 for 1.21.5, published on 2025-05-11. The code is public, but the mod is licensed as All rights reserved and is not open source.
Key features
AI-generated replies
Replies come from an AI model reached through OpenRouter, generated for each matching message.
Nickname matching
Messages are checked for configured nickname variations, so only messages addressed to the player trigger a reply.
Adjustable response delay
The wait before the reply is sent can be set, so answers do not appear instantly.
Cancel key
A key cancels a pending response, and other keys are configurable in the controls settings.
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 2
How it compares
AutoReply is a Fabric client-side mod for 1.21.1, released under the BSD 3-Clause License and not open source. ChatLogic is a client-side Fabric mod for 1.21 – 1.21.11 under the MIT License, and it is open source. Autonickname is server-side only, open source under the Mozilla Public License 2.0 and built for 1.21.5, so it does not reply to chat on the player's behalf.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| auto responser | Fabric | 1.21.4 – 1.21.5 | Client-side only | 2025-05-11 |
| AutoReply | Fabric | 1.21.1 | Client-side only | 2026-09-01 |
| ChatLogic | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-08-26 |
| Autonickname | Fabric | 1.21.5 | Server-side only | 2025-06-01 |
Questions
Does auto responser need Cloth Config API and Mod Menu?
Does auto responser have to be installed on the server?
Which OpenRouter setup does auto responser need?
In the catalog
auto responser is one of 5,392 Social mods on ModsFinder, and one of 4,084 Social mods for Fabric. 15,307 mods support Minecraft 1.21.5.
Similar mods
What the author says
the mod automatically responds to messages addressed to you, but the response is created by AI (openrouter API), you will need to specify your API key, below is the instruction on how to set up the mod works in the client environment and sends messages on your behalf
Official listing
- Modrinth page
- modrinth.com/mod/auto-responser
- Owner
- TWOCHEG
- Published
- 2025-05-10
- Updated on Modrinth
- 2025-05-11
- Facts verified
- 2026-10-15