Crystalize

A FUSER MCP server. Crystalize lets an agent DJ in FUSER, Harmonix's DJ game: it searches your songs, drops discs on the decks, and changes the key and tempo, through a mod running inside the game.

Install

Needs uv, FUSER on Steam, and UE4SS set up for it, see Setup. Then:

git clone https://github.com/Peyton-C/Crystalize.git
cd Crystalize
uv run crystalize install

install copies the mod into FUSER and warns about anything in the setup that will crash the game or stop the mod. Crystalize looks for FUSER in Steam's default library. Pass --game <folder> or set CRYSTALIZE_FUSER if yours is elsewhere.

Related MCP server: messier-live

Use

Start FUSER through Steam and open a freestyle session, then check the connection:

uv run crystalize state

Add the server to an MCP client:

claude mcp add crystalize -- uv run --directory /path/to/Crystalize crystalize mcp

See MCP server for the tools, and Bridge for how the server reaches the game.

Clawd

Optionally, Crystalize puts Clawd, in headphones, in place of your avatar:

uv run crystalize clawd on

clawd off takes him out. See Clawd.