Server Properties Editor

A Calagopus Panel extension that provides a visual editor for Minecraft server.properties files.

Screenshots

Properties Editor

Browse and edit all server properties organized by category with proper input types, descriptions, and version tags.

Unsaved Changes

Modified values are highlighted and tracked. Save all changes at once with a single click.

MOTD Editor

Write your MOTD with & color codes — no section sign needed. Live server-list preview, color palette, and format buttons. Codes are saved as § escapes so they work on every server version.

Features

• MOTD editor - Modal editor with & color code support, clickable color/format palette, live server-list preview (including obfuscated text animation), and two-line MOTDs. Values are written as properties-safe § escapes and decoded back to & codes for editing — legacy files with raw § or existing escapes both work
• Categorized view - Properties grouped into General, World, Players, Performance, Network, Security, Resource Pack, RCON & Query, and Management Server
• Smart input types - Booleans render as toggles, enums as dropdowns, integers as number inputs, view/simulation distance as sliders
• Descriptions for every property - Clear explanations of what each setting does
• Version tags - Shows which Minecraft version added each property
• Removed property handling - Legacy/removed properties still display with warnings if present in the file
• Search - Filter properties by name or description
• Change tracking - Modified values highlighted with an unsaved changes counter
• Reset & save - Reset all changes or save back to the file
• Unknown property support - Properties not in the metadata database still show as editable text fields
• Sensitive field masking - Passwords (RCON, management server) use masked inputs
• Comment preservation - Comments and formatting in the original file are preserved on save

Architecture

├── Metadata.toml          # Extension metadata
├── backend/
│   └── src/lib.rs         # Minimal backend stub (uses panel's built-in file API)
├── frontend/
│   └── src/
│       ├── index.ts       # Extension entry point + route registration
│       ├── properties.ts  # Property metadata database + parser/serializer
│       ├── PropertiesEditorPage.tsx  # Editor UI component
│       └── app.css        # Styling

Property Coverage

Covers all Java Edition server.properties fields including:

Category	Properties
General	motd, difficulty, gamemode, hardcore, max-players, enable-status, hide-online-players
World	level-name, level-seed, level-type, generate-structures, spawn-protection, max-world-size
Players	allow-flight, force-gamemode, player-idle-timeout, op-permission-level, pvp (legacy)
Performance	view-distance, simulation-distance, max-tick-time, entity-broadcast-range-percentage
Network	server-ip, server-port, online-mode, network-compression-threshold, rate-limit
Security	white-list, enforce-whitelist, enforce-secure-profile, prevent-proxy-connections, log-ips
Resource Pack	resource-pack, resource-pack-sha1, require-resource-pack, resource-pack-prompt
RCON & Query	enable-rcon, rcon.port, rcon.password, enable-query, query.port
Management	management-server-enabled, management-server-host/port/secret, TLS settings (1.21.9+)

Also includes removed/legacy properties (allow-nether, spawn-animals, spawn-monsters, etc.) so older server files display correctly.

Installation

1. Download the latest .c7s.zip from Releases
2. Upload it to your panel's extensions directory
3. Trigger a panel rebuild
4. A "Properties" tab will appear in each server's sidebar

License

MIT