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Hand Shaker

Hand Shaker

v7.0.1-1.21+NeoForge
Modrinth • 52 followers • 28 968 downloads
by Suskese
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Solution for server owners or modpack developers to disconnect users with unwanted mods, allow or require mods

Product

About

⚠️ This project requires to be set up on both sides, client and server side ⚠️

🤝 HandShaker 7.0.0 (alpha) Wiki is there!

Modrinth
CurseForge
Paper
Purpur
Wiki
Ko-fi
Fabric API
Neo Forge

📋 What is HandShaker?

HandShaker is a cross-platform mod/plugin verification system for Minecraft servers and clients. It enables servers to detect which mods players are running and enforce mod restrictions with customizable policies.

🎯 Core Functionality

  • Fabric/Neoforge Client → Sends your active mod list to the server upon join
  • Paper/Fabric/NeoForge Server → Validates mod lists against configured rules and enforces restrictions
  • Multi-platform Support → Works across Fabric, Paper, and NeoForge
  • Cryptographic Integrity → Prevents tampered or self-compiled HandShaker mods
  • Flexible Configuration → Per-mod rules: Required, Allowed, or Blacklisted

✨ Key Features

Feature Description
🔐 Per-Mod Configuration Individually set mod allowance to Required, Allowed, or Blacklisted
🚫 Customizable Enforcement Configurable kick messages and auto-ban capabilities
📊 Player History Database Store and query player mod histories
👀 Player Mod Viewing Administrators can see other players' mod lists
✔️ Integrity Verification Cryptographic signatures prevent spoofed mod reports
🔐 Custom Actions Allows to setup custom events (commands) for triggered mods

🏗️ Platform Comparison

✅ Supported/Working
⚠️ Issues/Unsupported
❌ Unsupported/Broken

Features Paper (1.x - 6.x) Fabric (2.x - 6.x) NeoForge (6.x+)
Integrity Checking ✅ 6.x+
⚠️ 3.x - 5.x
 ✅ 6.x+
⚠️ 3.x - 5.x		 ✅ 6.0.0+
Configurable Rules ✅ 6.0.0+ ✅ 6.0.0+ ✅ 6.0.0+
Database Storage ✅ 5.0.0+ ✅ 5.0.0+ ✅ 6.0.0+
GeyserMC/Floodgate ✅ 5.2.0+ ✅ 5.2.0+ ❌
Permissions ✅ 5.0.0+ ✅ 5.0.0+ ❌
Folia Compatibility ✅ 6.0.0+ ❌ ❌
Clickable text in chat ✅ ❌ ❌

🚀 Quick Start

Commands

Installation

  1. Download the appropriate mod/plugin for your platform:
  • Fabric Client: Place JAR in mods/ folder
  • Paper Server: Place JAR in plugins/ folder
  • NeoForge Client: Place JAR in mods/ folder
  1. Configure the mod/plugin

Basic Configuration

config: v4

# Behavior: "strict" - Force requires client-side mod or "vanilla" allow also non-mod clients
behavior: strict

# Integrity Mode: "signed" or "dev" - allow unsigned mods (if you are building own client/server fork)
integrity-mode: signed

# Whitelist mode: true = only allowed mods (inside whitelisted.yml), false = allowed by default.
# To work properly set "mods-whitelisted-enabled" must be true
whitelist: false

# Allow Bedrock players
allow-bedrock-players: false

# Player Database: Store and track player mod history (requires playerdb to be enabled)
playerdb-enabled: false

# Mod List Toggles: Enable/disable each mod list without losing configuration
mods-required-enabled: true
mods-blacklisted-enabled: true
mods-whitelisted-enabled: true

# Kick Messages - customize as needed (use {mod} for mod name)
messages:
  kick: "You are using a blacklisted mod: {mod}. Please remove it to join this server."
  no-handshake: "To connect to this server please download 'Hand-shaker' mod."
  missing-whitelist: "You are missing required mods: {mod}. Please install them to join this server."
  invalid-signature: "Invalid client signature. Please use the official HandShaker client mod."

  ban: "You have been banned for using a blacklisted mod: {mod}."
  bedrock: "Bedrock players are not allowed on this server."
  # custom messages for actions can be added here
  # placeholders are {mod} - mod which triggered, {player}
  test_action: "Hi, {player}! You are using {mod}! Thanks for using it!"



actions:
# System actions (Uses hardcoded functions, not recomended to copy these)
  kick:
    commands:
      - "kick {player} {messages.kick}"

  ban:
    commands:
      - "ban {player} {messages.ban}"
    log: true

  log:
    missing: "{player} tried to join but missing required mod/mods: {mod}"
    blacklisted: "{player} tried to join with blacklisted mod/mods: {mod}"

# Examples of custom actions
# placeholders are {mod} - mod which triggered, {player}, {messages.name_from_config.yml}

  test_action:
    commands:
      - "msg {player} {messages.test_action}"
      - "give {player} minecraft:diamond 1"
      - "say Say Hello to {player}, who is using {mod}!"

  watchdog:
    commands:
      - "ac increase_alert_level {player} 1000"

📝 Permissions

Permission Description Default
handshaker.admin Access to admin commands Operator
handshaker.bypass Bypass mod restrictions False

🎮 Supported Versions

Loader Versions Status Versions Status
Fabric 1.21 - 1.21.10, 1.21.11 ✅ Supported N/A N/A
Paper 1.21+ ✅ Supported N/A N/A
NeoForge 1.21 - 1.21.10, 1.21.11 ✅ Supported 1.20.1 Planned

📚 Documentation

Roadmap

  • More QoL features

🤝 Contributing

Issues, pull requests, and suggestions are welcome! Check the GitHub repository for contribution guidelines.

Preview

Product images

Environment

Requirements & compatibility

Compatibility & requirements

FabricFoliaNeoforgePaperPurpur1.21 – 1.21.1126.126.1.126.1.226.2

Local host

Required

Hosting on services

Required

Terms

License

Terms for using, modifying and redistributing this product.

MIT LicenseModrinth
Release

Latest release

v7.0.1-1.21+NeoForge

19.05.2026 · Modrinth