Pros-Cons MCP Server 🎯

Official Model Context Protocol (MCP) server for Pros-Cons.

Connect your AI assistants (Claude Desktop, Cursor, Zed, custom agent workflows) directly to your Pros-Cons account to create, weigh, evaluate, and update your decisions in real time.

[!NOTE] MCP integration is available exclusively for Pro + AI subscribers.

🚀 Quick Start

1. Get your API Key

1. Open the Pros-Cons Web App.
2. Go to Account Settings -> AI & Agent Integrations (MCP).
3. Click Create New MCP Key and copy your secret key (pc_live_...).

2. Configure Claude Desktop

Add the following to your claude_desktop_config.json:

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

{
  "mcpServers": {
    "pros-cons": {
      "command": "npx",
      "args": ["-y", "pros-cons-mcp"],
      "env": {
        "PROSCONS_API_KEY": "pc_live_your_actual_key_here"
      }
    }
  }
}

Or run locally from this repository:

{
  "mcpServers": {
    "pros-cons": {
      "command": "node",
      "args": ["/path/to/pros_cons_new/mcp-server/index.js"],
      "env": {
        "PROSCONS_API_KEY": "pc_live_your_actual_key_here"
      }
    }
  }
}

Restart Claude Desktop, and the hammer 🔨 tool icon will appear with Pros-Cons tools enabled!

3. Configure Cursor

In Cursor:

1. Open Settings -> Features -> MCP.
2. Click + Add New MCP Server.
3. Set:
   • Name: pros-cons
   • Type: command
   • Command: npx -y pros-cons-mcp
   • Env: PROSCONS_API_KEY=pc_live_your_actual_key_here

🛠 Available MCP Tools

| Tool Name | Description | | :--- | :--- | | list_decisions | List decisions (filter by ongoing, taken, discarded, or all). Shows title, score %, and reason counts. | | get_decision | Retrieve a decision with all pros and cons, weights (1–5), score dial %, and collaborators. | | create_decision | Create a new dilemma or comparison decision with initial weighted pros & cons. | | add_reason | Add a pro or con reason with an importance weight (1–5). | | update_reason | Adjust the weight (1–5) or title of an existing pro or con. | | delete_reason | Remove a reason from a decision. | | set_decision_status | Mark a decision as ongoing, taken (decided), or discarded. | | get_decision_analysis| Retrieve score summary, favored side, blind spots, and recommendations. |

💬 Example AI Prompts

• "Claude, check my active decisions on Pros-Cons and tell me which ones are pending a choice."
• "Create a new decision 'Relocating to Zurich vs London'. Add 4 pros for Zurich (taxes, outdoors) and 3 pros for London (career network, theater) with appropriate weights."
• "In my 'Stack Migration' decision, increase the weight of 'Developer Productivity' from 3 to 5 and add a new con: 'Library compatibility issues' with weight 4."
• "What blind spots or risks am I missing in my current decision?"