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.

Discord: https://discord.gg/Wvst4znsgk

Nexa AI Chat (Servers)