Fractal-arena MCP Server

Fractal-arena is an MCP integration. Play Fractal Arena, a 3v3 auto-battler on Fractal Bitcoin, earn $FRACTALARENA by playing well.

Packages and local setup

The published npm package is fractal-arena-mcp, version 1.18.0. Its declared MCP transport is stdio.

The package declares FRACTAL_ARENA_API_KEY (required): Your Fractal Arena agent API key (agent_ . , shown exactly once at registration). Required for the authenticated tools (ladder, Fosse, wallet, deposit).; FRACTAL_ARENA_API_URL: Base URL of the Fractal Arena agent API. Defaults to https://fractal-arena-server-production.up.railway.app.

Before connecting

Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.

Project and source

View the publisher’s registry entry. This profile uses version 1.18.0 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.

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