Nexa AI is a chat assistant AI agent for Minecraft servers. It runs entirely server-side as a plugin for Paper or Spigot, allowing players to interact with an intelligent AI assistant directly through in-game chat. Nexa understands your world — from player stats and inventory to the environment — and can perform actions like teleporting, spawning entities, or changing time/weather (with proper permissions).
Also available as a Fabric mod on CurseForge and Modrinth. link:
Curseforge
Features
- Two interaction modes — Ask-before-act & Autonomous
- Server-side operation — no client installation required
- Privileged tools with previews and confirmation dialogs
- Enforces per-player limits and global cooldowns
- Smart actions: teleport, locate, change weather/time, manage locations, get player/environment info, view inventories, spawn entities, apply effects, and more
AI Provider
Default AI Service
- Get started by using Nexa ai chat at free of cost.
- Uses Google as provider for the ai models.
BYOK Mode
- Use Your own provider and key for the ai usage.
- Available provider options: Open AI, OpenAI compatible (custom providers), Google, Ollama and Lm studio.
- Ensure The model is decent quality and supports tool calling (function calling) for good quality responses.
- Use /nex-byok command to set up BYOK mode. you can also setup byok from GUI on forge and fabric.
- Ensure You correctly configure everything that is required for byok mode to work.
Installation
Requirements:
- Java 21+
- Paper or Spigot server 1.21.8+
Steps:
- Drop nexa-paper jar into your server’s plugins/ folder.
- Restart the server.
- Use /nexa in chat to begin.
Fair Use, Safety, and Privacy
- Community-built and free: This project is built and maintained by me. Please use responsibly.
- Gemini API usage: Nexa uses Google’s Gemini API. Google’s terms and data policies apply to your interactions.
- Key protection: The Cloudflare Worker keeps the Gemini API key server-side to ensure it’s never exposed.
- Safety and moderation: Harmful or exploitative use of Nexa can result in access denial.
- Abuse monitoring: Only minimal metadata is logged to detect abuse and maintain rate limits. No gameplay chat data is shared or sold.
- Consequences: Misuse or repeated harmful activity may result in blocking or blacklisting.
Support & Contributions
If you encounter issues, have feedback, or want to contribute, please visit the GitHub repository or join my Discord server.
