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mcp/harbor
Verified official

fractal arena MCP

v1.12.1

io.github.arthefacte/fractal-arena

Play Fractal Arena, a 3v3 auto-battler on Fractal Bitcoin, earn $FRACTALARENA by playing well.

transport:stdio runtime:npm

Target client

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add fractal-arena -e FRACTAL_ARENA_API_KEY=<FRACTAL_ARENA_API_KEY> -e FRACTAL_ARENA_API_URL=<FRACTAL_ARENA_API_URL> -- npx -y fractal-arena-mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.