How do I set up the NannyKeeper MCP server?

// Add to your Claude Desktop config file:
// macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
// Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "nannykeeper": {
      "command": "npx",
      "args": ["@nannykeeper/mcp-server"],
      "env": {
        "NANNYKEEPER_API_KEY": "nk_live_YOUR_KEY"
      }
    }
  }
}

You: "How much would I owe in taxes if I pay my nanny
      $35,000 per year in California?"

Claude: [calls calculate_nanny_taxes tool]

"Based on NannyKeeper's calculation, here's your breakdown
for a $35,000/year employee in California:

Employer taxes (your cost):
  Social Security: $2,170.00
  Medicare:          $507.50
  FUTA:               $42.00
  CA Unemployment:   $119.00
  Total:           $2,838.50/year ($109.17/paycheck biweekly)

Your total cost per paycheck: $1,455.94
  ($1,346.15 gross pay + $109.17 employer taxes)

This exceeds the $3,000 FICA threshold, so you are a
household employer and must file Schedule H."