AltChecker

AltCheck is a mod focused on privacy and security. It provides tools to manage and verify accounts, with a comprehensive set of features to ease server administration while keeping sensitive data private.

Features

• Track player login IP usage over time
• Detect potential alts via shared IP relationships
• View grouped IP links and player history
• Session tracking (join/leave durations, online/offline status)
• Risk scoring (VPN + behavioral signal blend)
• Permission-based command access
• IP masking in chat with optional hover/click reveal (altcheck.view.ip)
• Admin utilities for hide/purge/cleanup/statistics

Commands

Core

• /altcheck trace <player> – Trace linked accounts for a player
• /altcheck lookup <ip> – Find players associated with an IP
• /altcheck history <player> – Show player IP history
• /altcheck list – Show grouped shared-IP relationships

Investigation (inv)

• /altcheck alts <player> – Show alternate accounts
• /altcheck ip <player> – Show known IPs for a player
• /altcheck sessions <player> [page] – Show session history (paged)
• /altcheck score <player> – Show risk score breakdown

Admin

• /altcheck purge <player> – Delete a player’s stored data
• /altcheck hide <player> – Toggle player visibility in results
• /altcheck cleanup – Remove old records
• /altcheck stats – Show database statistics

Help

• /altcheck help – Show commands you can access
• /altcheck help core
• /altcheck help inv
• /altcheck help admin

Permissions

Notes:

– Access is controlled by Fabric Permissions API.

– Command visibility in help is permission-aware.

| Permission | Description | Suggested Level |
|—|—|—————–|
| altcheck.use | Base access to root command | 2 |
| altcheck.trace | Use trace command | 2 |
| altcheck.lookup | Use lookup command | 4 |
| altcheck.history | Use history command | 4 |
| altcheck.list | Use list command | 4 |
| altcheck.alts | Use alts command | 2 |
| altcheck.ip | Use ip command | 4 |
| altcheck.sessions | Use sessions command | 4 |
| altcheck.score | Use score command | 2 |
| altcheck.purge | Use purge command | 4 |
| altcheck.hide | Use hide command | 4 |
| altcheck.cleanup | Use cleanup command | 4 |
| altcheck.stats | Use stats command | 2 |
| altcheck.view.ip | View hover/click full IP instead of masked-only | 4 |