Arena skill makes 100 Claude Code sub-agents fight in a tournament for the best answer
blaizedsouza · x · 2026-10-29
The open-source arena-skill project (MIT, already 1.1k stars) turns Claude Code into a tournament arena: run /arena and it spins up 100 sub-agents on the exact same task, each with a different strategy card, letting them compete until one best answer survives.
A viral demo describes a four-role split: Sonnet-class agents deploy 100 parallel builders in isolated git worktrees, a Haiku-class agent acts as an adversarial fuzzer firing rapid mutation probes, and an Opus-class agent serves as a blind judge scoring surviving diffs on a 100-point rubric. Free, no signup or API key needed — install it as a Claude Code skill.
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