# Arena

Spawn N parallel candidates at the same task, pick a base, graft the strongest parts of...

- Repository: https://github.com/cursor/plugins (15000 stars)
- Category: Engineering
- License: see repository
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add cursor/plugins --skill arena -g -a claude-code -y`
Codex: `npx skills add cursor/plugins --skill arena -g -a codex -y`
Cursor: `npx skills add cursor/plugins --skill arena -g -a cursor -y`
Gemini CLI: `npx skills add cursor/plugins --skill arena -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add cursor/plugins`

## Description

Spawn N parallel candidates at the same task, pick a base, graft the strongest parts of the losers into it. Use for /arena, 'arena this', 'throw it in the arena', or when one attempt at a non-trivial artifact would lock in the wrong shape.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Arena

In Claude Code, read [the Claude Code adapter](../../docs/harness/claude-code.md) once per session before you follow this skill. It maps the Cursor names in pstack skills to Claude Code.

Open a todolist with one entry per phase (Frame, Fan out, Cross-judge, Pick, Graft, Verify) before launching anything.

## Phase A: Frame

Every candidate gets the same prompt, so the prompt is the contract.

The rest: https://github.com/cursor/plugins/blob/HEAD/harness/pstack/claude-code/skills/arena/SKILL.md