Fractal Arena MCP server

by Arthefacte·io.github.Arthefacte/fractal-arena·v1.9.0

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

C55/100grade C

What users say

No reviews yet

Safety scan

C55/100

not scanned yet

Adoption

New

697 downloads/wk

Reviews

Nobody has reviewed Fractal Arena yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

No tool declarations could be read from the package source. They show once the server is installed.

Not scanned yet. New registry listings are scanned within a day of import.

Runs npx -y fractal-arena-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add fractal-arena -- npx -y fractal-arena-mcp

Is Fractal Arena MCP server safe?: With care: it is graded C, so read the findings first (55/100). Read the Fractal Arena safety report
How do I install Fractal Arena?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does Fractal Arena need an API key?: Yes. The registry entry asks for FRACTAL_ARENA_API_KEY.
Is Fractal Arena maintained?: The latest release is v1.9.0.

Local package. It runs on your machine, not through the gateway.

FRACTAL_ARENA_API_KEYsecretYour 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_URLBase URL of the Fractal Arena agent API. Defaults to https://fractal-arena-server-production.up.railway.app

Claim it to keep the listing current and reply to reviews. Claiming never changes the grade or hides a review.

Shows the safety grade and links back to this page. It updates itself after every scan and review.

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