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Directory / Claude community plugins (Anthropic) / colosseum

colosseum

plugin Software development

proven wrong by search results, and earn scores based on accuracy and independence — not agreement. A built-in Devil's Advocate challenges the final synthesis before it's delivered. How it works: 1. Builds a fact base from opposing-angle web searches 2. Each agent declares an independent position (blind draft — no agent sees others before submitting) 3. Agents debate up to 5 rounds: Prosecutor attacks, Defender responds, Adverse Witness probes shared blind spots 4. Role-switch gate fires when agents start citing the same sources or hit deadlock 5. Devil's Advocate challenges the final answer; a quantitative score (Accuracy · Evidence · Independence) determines whether it stands Works with Gemini CLI, Codex, aichat, or llm. Falls back to Claude's four internal roles (Pragmatist / Skeptic / Idealist / Realist) with zero setup.
Description from the marketplace entry / plugin manifest.

Information source

Copied from the Claude community plugins (Anthropic) catalog (anthropics/claude-plugins-community), maintained by Anthropic (community submissions).

Links are pinned to commit 06ec7b6 (2026-10-13), the version we synced. Not reviewed by us.

Install

Add the marketplace (once, in Claude Code)
/plugin marketplace add anthropics/claude-plugins-community
In a Claude Code session
/plugin install colosseum@claude-community
From your shell
claude plugin install colosseum@claude-community

Commands follow each host's documentation (Claude Code, Claude Cowork docs). gh skill needs GitHub CLI 2.90 or later and is in public preview.

Listed from Anthropic (community submissions)'s catalog, not reviewed by us. Read the source before installing.

Catalog
Claude community plugins (Anthropic) (claude-community)
Information source
marketplace.json in anthropics/claude-plugins-community
Author
Not stated in the source
Source code
JinHo-von-Choi/colosseum
Homepage
github.com/JinHo-von-Choi/colosseum
License
MIT (repository license)
Repository stars
3 for JinHo-von-Choi/colosseum
Added to catalog
2026-04-07
Last change
2026-10-07 (last push to the repo)

What it contains

Hosted in an external repository, so contents are not counted here. See the source link.

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