SM-ModTempDataSupport

A DLL mod for Scrap Mechanic that enables mods to read and write JSON files in the game's $TEMP_DATA directory, a sandboxed scratch space that is automatically wiped when the game exits.

Note

You can detect whether SM-ModTempDataSupport is installed by checking sm.tempDataMod_installed (May be changed to sm.modTempDataSupport_installed in a later version) is set to true.

Features

• Exposes $TEMP_DATA write access to other mods via JSON (without dll mod its read-only)
• Zero persistent side effects, all written files are cleaned up on game shutdown

Supported Versions

Game Version	Build
0.7.4	778

Usage

Once injected, other mods can use the sm.json api to write and read JSON files within $TEMP_DATA. These files persist only for the current session and are deleted automatically when the game closes.

Note

$TEMP_DATA is a game-managed directory. Do not rely on files written there surviving a restart.

Building from Source

Prerequisites:

• Visual Studio 2026
• Windows SDK

Steps:

1. Clone the repository.
2. Open the .slnx file in Visual Studio.
3. Build it.
4. The compiled SM-ModTempDataSupport.dll will appear in the output directory.

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you'd like to change.

License

See LICENSE for details.