Symptoms: Server kicks you immediately upon joining with a custom message.
Cause: The server uses a plugin like AntiAddon or ProtocolLib to scan for known malicious addon filenames. The exact string meteor-rejects-addon is blacklisted.
Fix: Rename the file to something innocuous like fabric-api-0.3.jar. This is not foolproof (hash-based detection still works), but it bypasses basic string matching.
Create a config file (rejects.yml) next to the JAR:
rules:
- id: drop-empty-payload
type: payload-empty
action: reject
code: 400
message: "Empty payload rejected"
- id: drop-bad-source
type: header-match
header: "X-Source"
pattern: "untrusted-source"
action: reject
code: 403
message: "Source blocked"
Place the path to rejects.yml in your environment or system property: -Dmeteor.rejects.config=/path/to/rejects.yml
Before understanding the rejects addon, one must understand Meteor Client. Launched in 2020, Meteor Client is a Fabric-based utility mod for Minecraft Java Edition, primarily targeting versions 1.19.x and 1.20.x. It is open-source, which means its code is publicly auditable. Features include:
Meteor’s development team curates features strictly. Any module that risks crashing the game, causing server-side bans via detectable patterns, or enabling griefing beyond "acceptable anarchy standards" gets rejected from the main build. Those rejected features become candidates for community addons—hence the name meteor-rejects-addon.
Let's assume you are adding a well-known package like accounts-ui:
meteor add accounts-ui
If "meteor-rejects-addon-0.3--3-.jar" is published to Atmosphere, you can add it like so:
meteor add <package-name>
Replace <package-name> with the actual name of the package. meteor-rejects-addon-0.3--3-.jar
If you are using the Meteor Client, Meteor Rejects is essentially the "Chaos Pack."
The most "useful" feature for the average player is Auto Ez and the extra combat automation utilities. It is designed for players who want the strict utility of Meteor combined with the toxic/chaotic culture often found on anarchy servers.
meteor-rejects-addon-0.3.jar is a specific build of a popular Minecraft mod extension designed for the Meteor Client, an open-source utility client used primarily on anarchy servers. Project Overview
The "Meteor Rejects" addon is maintained by the AntiCope group on GitHub. Its primary purpose is to host features that the main Meteor Client developers have either rejected for inclusion or that are ported from other utility clients. Key Features and Capabilities
The addon expands the utility of the base client with a variety of niche and powerful modules, including:
Automation: Features like AutoFarm (harvesting and replanting crops) and AutoPot (automatically using potions).
Combat and Utility: Specialized modules such as AimAssist, LawnBot, and Instamine variants used to break blocks rapidly.
Visuals and Exploits: Includes features like OreSim for simulating ore locations and various bypasses for server-side anti-cheats. Version 0.3 Details Symptoms: Server kicks you immediately upon joining with
The 0.3 version of the .jar file typically corresponds to updates for specific Minecraft versions (such as 1.20.4 or 1.21.x series). Anti Cope - GitHub
meteor-rejects-addon-0.3.jar is a popular third-party extension for the Meteor Client
in Minecraft, primarily known for incorporating features that were either officially rejected by the core Meteor developers or ported from other clients. Overview of Meteor Rejects
The addon acts as a "community bin" for highly requested but "too blatant" or specialized features that don't fit the main client's design philosophy. It is developed and maintained by the community, a well-known hub for Meteor Client additions. Core Features & Modules
While the exact list of modules evolves with each build, version
and its recent updates (e.g., for Minecraft 1.21.11) typically include: Combat & Utility: AimAssist:
Provides automated tracking and accuracy improvements for PvP. PacketFly:
Enables smoother, often more stable flight by manipulating game packets rather than standard movement. Place the path to rejects
Automates the harvesting and replanting of crops for resource efficiency. Specialized Exploits:
A module designed to simulate ore locations, though it frequently requires updates for new Minecraft versions. ExploitPreventer:
A tool meant to block or mitigate certain server-side exploits (often made optional in recent builds). Powered Rail Builder:
An automated builder module for complex tunnel and rail systems. Installation & Usage To use this addon, you must have the Fabric Loader and the base Meteor Client installed: Obtain the meteor-rejects-addon-0.3.jar from the official AntiCope/meteor-rejects GitHub Deployment: file into your Minecraft .minecraft/mods folder alongside the base Meteor Client jar.
Once in-game, the new modules will appear under their own category or integrated into existing Meteor Client GUI tabs, often marked with a specific tag to denote they are from the Rejects addon. Community Status Version Compatibility:
Recent builds (as of early 2026) have been updated to support Minecraft Reputation:
It is widely considered one of the "essential" addons for players on anarchy or non-vanilla servers due to its expanded feature set. for modules like OreSim or AimAssist? You NEED To Try This Meteor Addon For Minecraft 1.21.10
If you have stumbled upon a file named meteor-rejects-addon-0.3--3-.jar in your Minecraft mods folder, your downloads directory, or a server log, you are likely either a power user of the Meteor Client or a server administrator trying to prevent its use. This file name carries significant weight in the niche world of Minecraft utility mods, anarchy servers, and anti-cheat systems.
In this long-form article, we will dissect what this file is, why it has a double-dash in the version number (0.3--3), how it interacts with the Meteor Client, common errors associated with it, and step-by-step solutions to either make it work or remove it entirely.