MineVerify

Lightweight PaperMC plugin allowing apps to verify Minecraft players through generated in-game codes.

📋 Overview

MineVerify lets external apps verify that a Minecraft account is controlled by a real player on your server.

The app creates an internal verification request and asks the player to run /mineverify. The plugin then polls configured apps, generates a temporary code, validates /mineverify <code> in game, and reports the verified Minecraft UUID and username back to the app.

MineVerify only makes outbound requests to configured apps. It does not expose a public HTTP API on the Minecraft server.

✨ Features

• Verifies that a real connected Minecraft player owns a generated code
• Lets several external apps use the same Minecraft server for verification
• Keeps the Minecraft server private by using outbound app calls only
• Sends the app the verified Minecraft UUID and username after validation
• Expires unused codes automatically
• Provides admin status commands to inspect current verification activity
• Supports localized in-game messages

🚀 Installation

1. Install a PaperMC server with Java 25+
2. Download the latest MineVerify-x.x.x+mcx.x.x.jar from the releases page
3. Drop the jar into your server's plugins/ folder
4. Restart the server or run /reload confirm
5. Configure your apps in plugins/MineVerify/config.yml

🕹 Command Usage

Command	Permission	Description
/mineverify	mineverify.use	Starts checking configured apps for pending verification requests.
/mineverify <code>	mineverify.use	Validates a generated code for the connected player.
/mineverify status	mineverify.admin	Shows polling state, configured apps, stored requests, and last app responses.
/mineverify status requests	mineverify.admin	Shows admin status with stored request details.

/mineverify and /mineverify <code> must be run by a real player. Admin status commands can be run by admins or from the console.

⚙️ Configuration

config.yml defines the language, remote apps, and code validity.

language: "en_us"

apps:
  my-app:
    name: "Your App"
    base-url: "https://your-app.com"
    token: "generated-token-from-your-app"
    poll-interval-seconds: 3

linking:
  code-ttl-seconds: 60

Key	Default	Description
language	en_us	In-game message language. Available values are listed in config.yml.
apps.<id>.name	<id>	Player-facing app name.
apps.<id>.base-url	Required	App backend base URL.
apps.<id>.token	Required	Bearer token used by MineVerify when calling this app.
apps.<id>.poll-interval-seconds	3	Poll interval used only during an active player-triggered polling session.
linking.code-ttl-seconds	60	Generated code validity duration.

🔁 Verification Flow

1. The app creates an internal request for its own user.
2. The app asks the player to join the Minecraft server and run /mineverify.
3. MineVerify starts a temporary polling session.
4. MineVerify calls each configured app for pending requests.
5. MineVerify generates a code for each new pending request and sends it to the owning app.
6. The app shows /mineverify <code> to the user.
7. The player runs /mineverify <code> in game.
8. MineVerify validates the code and reads the connected player's UUID and username.
9. MineVerify reports either validation or expiration to the app.

🔌 App Endpoints

It's always MineVerify that contacts the app, never the opposite. In this way, each app configured in config.yml must implement these endpoints on its own backend.

Endpoint	Method	Description
/api/mineverify/pending-requests	GET	Returns app requests waiting for a generated code.
/api/mineverify/code-created	POST	Receives the generated code and expiration time.
/api/mineverify/validated	POST	Receives the verified Minecraft UUID and username.
/api/mineverify/expired	POST	Receives an expiration event when the code was not validated in time.

Every request sent by MineVerify includes:

Authorization: Bearer <app-token>

Important

To fully integrate MineVerify into your app, follow docs/APP_INTEGRATION.md.

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Crafted by Sukikui