Legal Documents
Privacy Policy
Transparent documentation on how LumaClient processes local data, which external APIs are contacted, and how to delete all local data anytime.
Last updated: November 2026 (Release 4.0.0)1. Data Minimization (Collect Only Needed Data)
LumaClient is built on a strict Local-First architecture. We do not operate user database servers, do not display ads, do not embed analytics trackers (zero Google Analytics / Meta Pixel), and never sell or share personal information. Only technical settings strictly required to run Minecraft on your PC are stored locally.
2. Creator & Contact Information (Business Details)
LumaClient is an independent project developed and maintained by Eryczus (_eastplaya), Poland. For privacy, security, or legal inquiries, contact us via:
- Official Support Discord: https://dc.lumaclient.pl
- GitHub Issue Tracker: github.com/Eryczussuda/LumaClientUpdates
3. Data Stored Locally on Your Device
All configuration files live strictly on your local disk inside %APPDATA%\.luma:
- Theme, accent color, RAM allocation, and JVM arguments (
launcher_config.json); - Configured game instances (Vanilla, Fabric, Forge, NeoForge) and mod folder profiles;
- Player username, UUID, local custom
.pngskin path, and Microsoft OAuth2 refresh token (your Microsoft password is never seen or stored); - Local session playtime history (
session_history.json) and game logs.
4. Third-Party APIs & SDK Audit
Neither the website nor the launcher contains third-party tracking SDKs. Outbound network connections occur strictly when triggered by user actions:
| Service / Provider | Purpose | Data Transmitted |
|---|---|---|
| Microsoft / Xbox Live OAuth2 | Official Minecraft Premium sign-in | OAuth2 token exchange directly with Microsoft servers |
| Mojang Launchermeta | Downloading official Minecraft versions and libraries | Standard HTTP GET request (`LumaClient/4.0.0`) |
| Modrinth API v2 | Searching and downloading mods & .mrpack modpacks |
Search query, Minecraft version, and loader filter |
| GitHub Releases API | Checking for launcher updates | Standard HTTP GET request to GitHub API |
| Discord IPC (Local) | Displaying in-game status (Discord Rich Presence) | Local IPC with the Discord desktop app (can be toggled off in settings) |
5. Children's Privacy (Age Consent for Kids)
Neither lumaclient.pl nor the LumaClient desktop app collects personal data from children or adults (compliant with GDPR and COPPA). Users under the age of 16 (or 13 depending on jurisdiction) should obtain parental or guardian consent before signing into third-party Microsoft services or installing desktop software.
6. How to Delete Your Data (Data Deletion Option)
You have full, immediate control over all data stored by the launcher and website:
- In the LumaClient desktop app: remove accounts in the Accounts tab, clear session history with one click, or delete the
%APPDATA%\.lumafolder and uninstall via Windows Installed Apps. - On this website: clear all saved browser theme preferences and consent flags (
localStorage) at any time using the button below: