@masonator/get-mcp-keys

🔐 get-mcp-keys

Stop accidentally committing API keys to your repos!

The Problem

When using Cursor AI (and other AI coding assistants) with MCP servers, you need API keys in your ./cursor/mcp.json file:

{
  "mcpServers": {
    "firecrawl": {
      "command": "npx",
      "args": [
        "-y",
        "firecrawl-mcp"
      ],
      "env": {
        "FIRECRAWL_API_KEY": "sk_live_ohno-this-should-NOT-be-in-git" // 💀
      }
    }
  }
}

This is a security nightmare waiting to happen. One accidental commit and your keys are exposed in your Git history.

💯 The Solution

get-mcp-keys loads your API keys from a secure file in your home directory, keeping them out of your repositories entirely.

⚡ Quick Start

1. Create a .mcprc file in your home directory

touch ~/.mcprc
chmod 600 ~/.mcprc  # Make it readable only by you

3. Add your API keys to the file

# ~/.mcprc
FIRECRAWL_API_KEY="your_actual_api_key_here"
BRAVE_API_KEY="another_secret_key_here"
# Add any other MCP server keys you use

4. Update your MCP configuration to use get-mcp-keys

{
  "mcpServers": {
    "firecrawl": {
      "command": "npx",
      "args": [
        "@masonator/get-mcp-keys", // 🔐
        "npx",
        "-y",
        "firecrawl-mcp"
      ]
    }
  }
}

That's it! The get-mcp-keys utility will:

• Load your API keys from ~/.mcprc
• Inject them as environment variables
• Run your MCP server command with the keys available

🛡️ Security

• Your API keys stay in your home directory
• Keys are never committed to repositories
• Keys are loaded only when needed
• Debug output shows only first/last few characters of keys

🧰 Supported MCP Servers

Works with any MCP server that needs environment variables, including:

• FireCrawl
• Brave Search
• Supabase
• And any other MCP servers you configure!

🔍 How It Works

get-mcp-keys reads your .mcprc file, adds those environment variables to the current environment, and then executes whatever command you specify after it in the args list. It's simple yet effective!

📋 License

MIT

⭐ If this saved you from committing your keys, star the repo!