System Client Mod (1.21.1) is a customized fork of the Argon client (approximately 75% based on the original), focused on:

  • Bypassing Vulcan and Grim Anticheat with advanced packet handling and human-like behavior simulation
  • Improving graphics behavior, PvP usability, and overall stability under common anticheats

Features:

  • Legit Autototem (HoverTotem-like)
    • Dynamic delay to simulate human-like behavior
    • Removed unstable autoswitch behavior from the original Argon
  • Dhandmod Integration
    • Autoswitch-style logic without pad packets or impossible timings
    • Avoids impossible slot actions and inhuman delays
    • Custom totem slot selection
    • Configurable automation timings
  • Misclick Optimizer
    • Rewritten and extended from the original Argon version
    • Reduces suspicious multiaction patterns and packet order issues
    • Best paired with AutoCrystal and Anchor Macro
  • KeyPearl Enhancements
    • Switch-back slot selection for faster double-tapping and pearl usage
    • More controlled and predictable pearl behavior
  • Placement Optimizer
    • Faster crystal placement when used with AutoCrystal
    • Removes extra placement delay to improve responsiveness
    • Quick block-up support for crystal PvP
    • Anchor exclusion option for more natural Anchor Macro usage
  • Combat Behavior
    • Timed attack logic tuned for crystal and sword PvP
    • Internally evaluated across common combat scenarios for consistency
  • Target HUD Improvements
    • Cleaner, more compact HUD design
    • Displays additional opponent information for clearer PvP decisions
  • Camera Optimizer
    • Improved camera handling for PvP
    • Water and lava visual optimizations
    • Designed to work smoothly with freelook-type mods
  • Screenshare-Oriented Utilities
    • Self-destruct functionality derived from Argon concepts to reduce screenshare risk
  • Various small adjustments for smoother behavior under modern anticheats

User Interface

  • Clean, modern GUI with an emphasis on readability
  • Intuitive controls and compact layout to surface key information quickly

Configuration Guidelines – Grim Anticheat

  • Suitable for large servers running Grim AC.
  • Avoid:
    • Blatant autototem modes
    • AutoCrystal below 2 ticks for break and place
    • Anchor Macro with extreme (0-tick) settings
    • Break Optimizer and aggressive Jump Optimizer settings
    • Totem offhand setups that appear unnatural
  • Use with caution:
    • Dtap setup modules
    • Anchor spam combined with aggressive air placement logic
  • Recommended for safer behavior:
    • Auto XP with a non-zero delay
    • Misclick Optimizer enabled with all subfunctions
    • Placement Optimizer configured to exclude anchors
    • Moderate, non-zero delays for timing-sensitive modules

Configuration Guidelines – Vulcan & Other Anticheats

  • Applicable for servers using Vulcan and similar anticheats.
  • Most modules are generally usable with conservative settings.
  • Safe starting point is to reuse your Grim configuration and then gradually relax limits.
  • Safer extra options:
    • Anchor Macro with default timing
    • Dig Optimizer and Jump Optimizer with moderate values
    • Dtap setup modules when tested per server

Anticheat Test Summary

The following values are reported bypass rates under specific tests and configurations (actual results may vary by server setup):

  • Grim AC: 90% reported bypass rate
  • TotemGuard: 100% reported bypass rate (without auto offhand and blatant autototem)
  • Vulcan AC: 98% reported bypass rate
  • Matrix AC: 90% reported bypass rate
  • Verus AC: 100% reported bypass rate
  • Spartan AC: 100% reported bypass rate
  • AAC: 100% reported bypass rate

Note: System is an Argon-based client with extended utilities and refined modules, intended to reduce anticheat flags and improve PvP control when configured responsibly.

Screenshots:

Requires:

Fabric API

How to install:

Click the following link to view details: How to Install Mods for Minecraft Java Edition on PC: A Beginner Guide

System Client Mod (1.21.1) Download Links

For Minecraft 1.21.1, 1.21

Fabric version: Download from Server 1 – Download from Server 2

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