Decision Stack MCP Server

An MCP server that brings the Decision Stack framework to MCP-compatible clients like Claude Code, Codex, and Gemini CLI.

What it does

Exposes a decision-stack tool that guides you through organising your strategic thinking into a structured context bundle — ready to import into Lunastak to generate your full Decision Stack (Vision, Strategy, Objectives, Principles, Opportunities).

Four modes:

• Context dump — share documents, get organised themes back
• Strategic exploration — guided Socratic questioning
• Focused deep-dive — go deep on one area
• Gap analysis — see what's covered and what's missing

Install

Claude Desktop

Add to your config file and restart Claude Desktop.

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "decision-stack": {
      "command": "npx",
      "args": ["-y", "decision-stack@latest"]
    }
  }
}

Claude Code

claude mcp add decision-stack -- npx -y decision-stack@latest

Codex

codex --mcp-config '{"decision-stack":{"command":"npx","args":["-y","decision-stack@latest"]}}'

Other MCP clients

Any MCP-compatible client can connect using:

command: npx
args: -y decision-stack@latest

Usage

1. Start a conversation in your MCP client
2. The decision-stack tool will be available — invoke it or ask to "build my Decision Stack"
3. Choose a mode or upload your documents
4. Work through the session — the assistant extracts and organises your strategic context
5. When done, copy the JSON context bundle
6. Import into Lunastak to generate your Decision Stack

About

The Decision Stack framework is from The Decision Stack by Martin Eriksson. Lunastak is an AI strategy coach that helps leaders build and maintain their Decision Stack.

Built by Jonny Schneider at Lunastak.

License

MIT