Serverify

Serverify is a server browser. Press F8 (or type /serverify web, or press the button on the mod's settings page) and your web browser opens a page with a search box, a category menu and cards showing each server's picture, address, player count and country. Press Add and the server goes to the top of your Multiplayer list. Then join it from Horizon's own Multiplayer screen.

It is the Horizon version of Serverify, the server browser for Fabric, Quilt, Forge and NeoForge, by the same author.

What it does

• Opens a server browser page in your web browser: search, 22 categories, an offline-mode filter and an Add button.
• Adds servers to servers.dat in the game folder, with the name cleaned of colour codes.
• Adds chat commands: /serverify web, list [category], search <words>, next, prev, add <number> and categories.
• Adds a row in Options > Mods with a rebindable key (F8 by default) and a settings page with two buttons: open the browser, and Offline-mode servers only (on by default).

Horizon cannot join servers that check Minecraft accounts yet, which is most public servers, so by default the page shows servers that accept offline-mode players. Turn the filter off to see all of them.

What it contacts

• Modrinth. The game asks api.modrinth.com for the server list and cdn.modrinth.com for server pictures, only when you look for servers.
• Three listing sites. With the offline-mode filter off (and for top-mc-servers.net's list of cracked servers when it is on), the game fetches public pages of top-mc-servers.net, minecraftservers.org and minecraft-mp.com, and their server pictures. The game builds those addresses itself. The page reads the fetched pages with the browser's own HTML parser.
• A page on your computer. The first time you open the page, the mod starts a small web server on 127.0.0.1 (this computer only, never the network) with a random secret in its address, made for each session. The page talks only to that server. A request with another host name, another origin or no secret is refused. The server can show the list, send a picture and add one server to your Multiplayer list.
• It sends no data about you, and makes no request at any other time.

What it does not do

• It does not run any code from the sites it reads, and it does not send your data anywhere.
• It does not change anything but servers.dat (one entry at a time) and its own settings in horizon-mods/.horizon-mod-data/serverify/.
• It does not draw screens or buttons in the game: Horizon's hook points have none, so the screen is your web browser.
• It cannot make Horizon join servers that check Minecraft accounts.
• Adding a server rewrites servers.dat, which drops the hidden direct-join entries Horizon keeps. Your saved servers stay.

Install

Install it from the launcher's Mods page, then press Build there, and play that instance. Guide: https://github.com/Louchatfroff/serverify/tree/main/horizon/serverify#readme

Native mods are not sandboxed. The source is public and licensed GPL-3.0-only: https://github.com/Louchatfroff/serverify/tree/main/horizon/serverify