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LLM Council MCP Server (llm-council-mcp)

NOTE

Attribution & Inspiration: This project is inspired by Andrej Karpathy's LLM Council multi-perspective deliberation methodology. It operationalizes the 3-Stage Council Protocol (Independent Gathering, Adversarial Critique, and Chairman Synthesis) as a native Model Context Protocol (MCP) tool server for modern AI coding agents.

A high-performance, host-agnostic MCP server that empowers Any AI Coding Agent (Google Antigravity, Claude Code, Codex, Cursor) to act as the Chairman & Executor while delegating:

  • Architectural Strategy & Modular Contracts to OpenAI (gpt-5.6-sol) (The Architect)

  • Adversarial Critique & Edge-Case Stress Testing to DeepSeek (deepseek-v4-pro / deepseek-reasoner) (The Contrarian)

Both models are queried concurrently via asynchronous I/O to minimize latency, giving any host agent frontier-grade peer review without slowing down execution.


Architecture & 3-Stage Deliberation Protocol

                      ┌─────────────────────────────────────────┐
                      │        THE CHAIRMAN & EXECUTOR          │
                      │  (Dynamic Host: Antigravity / Claude /  │
                      │               Codex / Cursor)           │
                      │  Context Ingestion & Workspace State    │
                      └────────────────────┬────────────────────┘
                                           │
                              [MCP: deliberate_council]
                                           │
                   ┌───────────────────────┴───────────────────────┐
                   ▼                                               ▼
        ┌─────────────────────┐                         ┌─────────────────────┐
        │    The Architect    │                         │   The Contrarian    │
        │  (OpenAI gpt-5.6)   │                         │(DeepSeek Reasoner)  │
        │  Stage 1: Gathering │   CONCURRENT ASYNC IO   │  Stage 2: Critique  │
        │  Modular contracts  │ ◄─────────────────────► │  Adversarial flaws, │
        │  & layout blueprint │   Independent Review    │  race conditions    │
        └──────────┬──────────┘                         └──────────┬──────────┘
                   │                                               │
                   └───────────────────────┬───────────────────────┘
                                           │
                                           ▼
                      ┌─────────────────────────────────────────┐
                      │           CHAIRMAN'S DECREE             │
                      │      (Synthesized by Host Agent)        │
                      │  Reconciles tensions, produces decree,  │
                      │  edits files, and verifies builds       │
                      └─────────────────────────────────────────┘
  1. Stage 1: The Gathering (The Architect): OpenAI independently evaluates the problem, designing clean interface boundaries, type contracts, and sequence of changes.

  2. Stage 2: The Critique (The Contrarian): DeepSeek Reasoner independently stress-tests the problem, searching for race conditions, subtle logic regressions, and unnecessary over-engineering.

  3. Stage 3: The Chairman's Decree (The Host Agent): The calling agent (Antigravity Gemini, Claude Code, or Codex/Cursor) receives both structured perspectives, resolves points of tension, creates the implementation plan, and executes the workspace changes.


Related MCP server: brainstorm-mcp

Exposed MCP Tools

Tool

Description

deliberate_council

Concurrently queries both the Architect (gpt-5.6-sol) and Contrarian (deepseek-v4-pro), returning a structured report with identified tension points for Chairman synthesis.

consult_architect

Single-target query to OpenAI for API schema design, interface planning, or modular file layouts.

consult_contrarian

Single-target query to DeepSeek-V4 Pro for adversarial code reviews, bug-hunting, edge cases, and over-engineering checks.

offload_task

Offloads focused implementation subtasks, utility code, unit test suites, or regex writing to high-speed workers (DeepSeek-V4 Flash or OpenAI gpt-5-mini). Prevents host turn/token depletion.

fast_context_reader

High-speed document/log parsing and filtering via DeepSeek-V4 Flash in ~1–2s. Extracts only requested signals without bloating host agent context.


Installation & Build

cd D:/Repositories/llm-council-mcp
npm install
npm run build

Multi-Platform Configuration

1. Google Antigravity 2.0 / AGY CLI

Add to ~/.gemini/config/mcp_config.json:

{
  "mcpServers": {
    "llm-council": {
      "command": "node",
      "args": [
        "D:/Repositories/llm-council-mcp/dist/index.js"
      ],
      "env": {
        "OPENAI_API_KEY": "sk-proj-YOUR_OPENAI_KEY",
        "DEEPSEEK_API_KEY": "sk-YOUR_DEEPSEEK_KEY",
        "COUNCIL_ARCHITECT_MODEL": "gpt-5.6-sol",
        "COUNCIL_CONTRARIAN_MODEL": "deepseek-reasoner",
        "COUNCIL_TIMEOUT_MS": "120000"
      }
    }
  }
}

2. Claude Code / Claude Desktop

Add to ~/.claude/mcp.json or claude_desktop_config.json:

{
  "mcpServers": {
    "llm-council": {
      "command": "node",
      "args": [
        "D:/Repositories/llm-council-mcp/dist/index.js"
      ],
      "env": {
        "OPENAI_API_KEY": "sk-proj-YOUR_OPENAI_KEY",
        "DEEPSEEK_API_KEY": "sk-YOUR_DEEPSEEK_KEY"
      }
    }
  }
}

3. Cursor & Codex

Add the same server block to ~/.cursor/mcp.json or Cursor Settings → Features → MCP.


Environment Variables

Variable

Description

Default

OPENAI_API_KEY

Your OpenAI Platform API key (sk-proj-...)

Required

DEEPSEEK_API_KEY

Your DeepSeek Platform API key (sk-...)

Required

OPENAI_BASE_URL

OpenAI API Base URL

https://api.openai.com/v1

DEEPSEEK_BASE_URL

DeepSeek API Base URL

https://api.deepseek.com

COUNCIL_ARCHITECT_MODEL

Default model for the Architect role

gpt-5.6-sol

COUNCIL_CONTRARIAN_MODEL

Default model for the Contrarian role

deepseek-reasoner

COUNCIL_TIMEOUT_MS

Max API timeout in milliseconds

120000 (2 minutes)


Economics & Cost Efficiency

Because the host orchestrator absorbs 95% of workspace file searches, git diffs, and terminal runs within your base plan, the Council only burns external API tokens during high-level planning rounds:

  • OpenAI (gpt-5.6-sol): ~$0.025 / round

  • DeepSeek (deepseek-v4-pro): ~$0.007 / round

  • Combined Cost: ~$0.032 (~3 to 4 cents) per full Council deliberation.

  • A $50 balance ($35 OpenAI + $15 DeepSeek) funds ~1,400 full deliberations (5 to 7+ months of active development).


Credits & License

  • Inspired by the LLM Council architecture conceived by Andrej Karpathy.

  • Released under the MIT License.

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Maintenance

Maintainers
Response time
Release cycle
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Commit activity

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