Project information and trust documentation for Mosaic CrossStream.
Mosaic CrossStream
Mosaic CrossStream is an independent Windows desktop launcher and resource manager for Minecraft: Java Edition.
The project helps players manage locally installed game versions, launch settings, Java runtimes, and supported game resources. It is designed for players who own and use Minecraft: Java Edition on Windows.
Project website: mcs.cl271.top
Mosaic CrossStream is not affiliated with, endorsed by, or associated with Mojang Studios, Microsoft, or Minecraft.
Official account sign-in
When official account sign-in is available, Mosaic CrossStream uses the Microsoft OAuth 2.0 device code flow. Users authenticate only on Microsoft-hosted pages; Mosaic CrossStream never presents a Microsoft password form.
After a user grants consent, the launcher uses the official Xbox Live, XSTS, and Minecraft Services authentication sequence only to:
- authenticate the consenting user;
- verify the required Minecraft: Java Edition entitlement;
- retrieve the user's game profile; and
- create a local game session for a locally installed game version.
The project does not bypass authentication, license checks, account restrictions, or platform safety features. It is not intended for account trading, credential sharing, bulk account automation, or access to another person's account.
Community resource integrations
Mosaic CrossStream is designed to help users discover and install compatible Minecraft mods, modpacks, resource packs, shader packs, and data packs from approved third-party platforms.
Each platform integration is enabled only after the required authorization has been granted. Platform names and original project links remain visible to users, and Mosaic CrossStream does not claim ownership of third-party projects or files.
Project status
Mosaic CrossStream is under active development. Its application source code is currently maintained in a private repository. This public repository provides project, privacy, security, and third-party integration documentation for platform review and public reference.
Privacy and security
Contact
For project questions, account sign-in concerns, or security reports, contact cl271@outlook.com.