colosseum
Publisher not specified · Claude Code
What this plugin does
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.
Catalog observations
- Sources
- Community
- Works with
- Claude Code
- Reported installs
- Not provided
- First observed
- 2026-10-03 22:13 UTC
- Last observed
- 2026-10-08 00:02 UTC
Installation counts are reported by Claude Marketplace, not independently verified active users. Observation dates are not release dates. Pricing and account requirements must be checked with the publisher.
Install in Claude Code
Choose a source and review what the plugin adds before installing.
Community
/plugin marketplace add anthropics/claude-plugins-community
/plugin install colosseum@claude-communitySource evidence
Descriptions and compatibility labels come from the linked sources. Where both sources match, the GitHub description is used because web summaries may be shortened. We have not independently tested the declared capabilities.