Brainstorm MCP server

<!-- mcp-name: io.github.spranab/brainstorm-mcp -->

brainstorm-mcp

Ask one model a design question and you get one confident answer, with no signal about which parts it is unsure of. Ask three and the disagreement is the signal.

brainstorm-mcp runs multi-round debates between GPT, Gemini, DeepSeek, Claude and local Ollama models from inside your editor: they see and critique each other's answers across rounds, then you get a 3-bullet synthesis — recommendation, key tradeoffs, strongest disagreement. Also does instant quick mode, multi-model code review with verdicts, and red-team/Socratic styles. Hosted mode needs zero API keys.

Don't trust one AI. Make them argue.

Quick start (60 seconds)

claude mcp add brainstorm -- npx -y brainstorm-mcp

Then ask Claude: "Brainstorm using opus, sonnet, and haiku about whether we should use GraphQL or REST."

That runs in hosted mode: no API keys, no provider accounts. The debate uses the models already available in your environment, and you get the 3-bullet synthesis at the end.

Demo

Click to watch: 3 models debate, cross-examine, and produce a structured verdict — all inside Claude Code.

Features

• Hosted mode — No API keys needed. Uses models in your environment (Claude Opus/Sonnet/Haiku) via sub-agents
• API mode — Direct model API calls with parallel execution across OpenAI, Gemini, DeepSeek, Groq, Ollama
• CLI mode — Debate through agent CLIs you already have (claude, codex, and more) so debates run on your subscription instead of API credits
• brainstormquick** — Instant multi-model perspectives in under 10 seconds
• brainstormreview** — Multi-model code review with structured findings, severity ratings, and verdicts
• Debate styles — Freeform, red-team (adversarial), and Socratic (probing questions)
• Context injection — Ground debates in actual code, diffs, or architecture docs
• 3-bullet synthesis verdicts — Recommendation, Key Tradeoffs, Strongest Disagreement
• Claude as participant — Claude debates alongside external models with full conversation context
• Multi-round debates — Models see and critique each other's responses across rounds
• Parallel execution — All models respond concurrently within each round
• Resilient — One model failing doesn't abort the debate

Install

The one-line command under Quick start is enough for hosted mode. Add provider keys to bring GPT, Gemini, DeepSeek, Groq or Ollama into the debate; per-client setup follows.

Claude Code

Add to your project's .mcp.json:

{
  "mcpServers": {
    "brainstorm": {
      "command": "npx",
      "args": ["-y", "brainstorm-mcp"],
      "env": {
        "OPENAI_API_KEY": "sk-...",
        "GEMINI_API_KEY": "AIza...",
        "DEEPSEEK_API_KEY": "sk-..."
      }
    }
  }
}

Claude Desktop

Add to claudedesktopconfig.json:

Shortened. The full README is on GitHub.