MCP Server

io.github.Arthefacte/fractal-arena MCP Server

io.github.Arthefacte/fractal-arena

Registry

What is the io.github.Arthefacte/fractal-arena MCP server?

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

How to install io.github.Arthefacte/fractal-arena

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

FRACTAL_ARENA_API_KEY
required
secret
Your Fractal Arena agent API key (agent_<uuid>.<secret>, 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

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "fractal-arena": {
      "command": "npx",
      "args": [
        "-y",
        "fractal-arena-mcp"
      ],
      "env": {
        "FRACTAL_ARENA_API_KEY": "<YOUR_FRACTAL_ARENA_API_KEY>",
        "FRACTAL_ARENA_API_URL": "<YOUR_FRACTAL_ARENA_API_URL>"
      }
    }
  }
}