Multi-agent MCP server that fans out prompts to Claude, Codex, Copilot, Cursor, and Gemini in parallel, then reconciles their outputs into a single high-confidence recommendation.
Quickstart (Claude Code)
Install as a Claude Code plugin:
/plugin marketplace add nexusentis/quorum
/plugin install quorum@quorum-marketplace
Then install the agent CLIs you want to use (see Prerequisites), and run:
/quorum:run review this repo
Two usage paths
Quorum works in two distinct ways depending on your editor:
Claude Code — full orchestration
Claude Code gets the complete experience: skills, relay agents, and blind judge reconciliation.
/quorum:run <prompt>— Fan out to all enabled agents, deduplicate findings, run blind judge scoring, and present a synthesized recommendation. Supports modes:review,review-codebase,architecture,implement,diagnose./quorum:agent <agent> <prompt>— Test a single agent and get the raw result back. Useful for debugging.
Claude participates as both an agent (analyzing code directly) and the judge (scoring anonymized outputs). Agent identities are hidden during scoring to prevent bias.
Any MCP client — direct tool calls
Cursor, VS Code, Windsurf, and any other MCP-compatible client get access to the MCP tools directly. The client's own LLM decides how to use the results.
codex_query/copilot_query/cursor_query/gemini_query— Query a single agentquorum_query— Fan out to all enabled agents in parallel and return collected results
No skills, no relay agents, no blind judge — your editor's LLM handles interpretation.
Installation
Claude Code (recommended)
Install directly as a plugin:
/plugin marketplace add nexusentis/quorum
/plugin install quorum@quorum-marketplace
This sets up everything automatically — MCP servers, relay agents, skills, and permissions. Restart Claude Code after installing.
What gets installed
.mcp.json— 5 MCP servers (4 individual agents + combined quorum)settings.json— Auto-approve permissions for all agent CLIs and MCP toolsagents/— 5 relay agent definitions for parallel fan-out via the Task toolskills/—/quorum:run(full orchestration) and/quorum:agent(single agent)quorum.config.json— Enable/disable individual agents
Manual setup (from source)
Clone the repo and install dependencies:
git clone https://github.com/nexusentis/quorum.git
cd quorum/mcp-servers && npm install
# Restart Claude Code to pick up the MCP servers
.mcp.json
{
"mcpServers": {
"quorum-codex": {
"command": "./mcp-servers/run.sh",
"args": ["codex-server.ts"],
"description": "Cross-check: OpenAI Codex CLI wrapper (gpt-5.3-codex)"
},
"quorum-copilot": {
"command": "./mcp-servers/run.sh",
"args": ["copilot-server.ts"],
"description": "Cross-check: GitHub Copilot CLI wrapper (ACP + fallback)"
},
"quorum-cursor": {
"command": "./mcp-servers/run.sh",
"args": ["cursor-server.ts"],
"description": "Cross-check: Cursor CLI wrapper (Composer 1.5)"
},
"quorum-gemini": {
"command": "./mcp-servers/run.sh",
"args": ["gemini-server.ts"],
"description": "Cross-check: Google Gemini CLI wrapper (gemini-3-pro)"
},
"quorum": {
"command": "./mcp-servers/run.sh",
"args": ["quorum-server.ts"],
"description": "Quorum: fan out to all agents in parallel and return collected results"
}
}
}
settings.json
{
"permissions": {
"allow": [
"Bash(codex exec --full-auto --sandbox read-only *)",
"Bash(copilot -p * --silent *)",
"Bash(copilot --acp)",
"Bash(agent -p --force --trust *)",
"Bash(gemini -p * --yolo *)",
"mcp__quorum-codex__codex_query",
"mcp__quorum-copilot__copilot_query",
"mcp__quorum-cursor__cursor_query",
"mcp__quorum-gemini__gemini_query",
"mcp__quorum__quorum_query"
]
}
}
Cursor
cd your-project
npx quorum-agents --setup cursor
This creates .cursor/mcp.json: