MCP Server

Budget Build Invest! provides a Node.js Model Context Protocol (MCP) server that exposes our finance calculation tools to AI assistants like Claude Desktop, Cursor, and others.

Getting started

Add to your Claude Desktop config (claude_desktop_config.json):

{
  "mcpServers": {
    "budgetbuildinvest": {
      "command": "npx",
      "args": ["-y", "@cosyslabs/bbi-mcp"]
    }
  }
}

Then ask Claude: "Calculate the monthly payment on a $400k mortgage at 6.5% for 30 years."

Available tools

• calcMortgage — Monthly payment, total interest, amortization schedule
• calcCompoundInterest — Growth over time with optional monthly contributions
• calcLoan — EMI calculator with full amortization
• calcDebtPayoff — Snowball vs avalanche comparison
• calcRetirement — Nest egg projection with 4% rule
• calcNetWorth — Assets minus liabilities

Powered by AI

Budget Build Invest! also features Alex, our built-in AI financial assistant, which uses the same MCP tools to answer finance questions in plain language.