Seamless Co-op Toolkit

A Windows desktop toolkit for Elden Ring Seamless Co-op, rebuilt with PySide6.

The project is under active development. Game installation and launching, Seamless Co-op settings, current game tools, cheats, and build editing are available. Save backups and character management are still being rebuilt.

User interface

The screenshots below show what the program looks like now. I restored this interface using old versions of Seamless Co-op Mod Manager (SCMM) by 2Pz as a reference. Some parts may change during development.

Main screen

Seamless Co-op settings

Current game

Save backups

Character manager

Toolkit settings

Cheat table

Player stats and equipment

Development

uv sync --dev
uv run sct
uv run python -m unittest discover -s tests -v

Windows build

The Toolkit release build needs a valid ERSC_RELEASE_API_URL in .env. It does not need the item data.

uv sync --group build
uv run python tools/build_release.py

The program folder and its versioned ZIP are created in dist.

To create dist/items.zip locally after changing files in data/items, run:

uv run python tools/build_items.py

Credits

This project continues work based on Phantom Toolkit by 2Pz.

See LICENSE.