Roi Calculator

Finance REST API MCP

Return the return on investment: total invested (amount plus extra costs), net gain, simple ROI percent, annualized ROI percent, years to double at that rate (rule of 72), gain per year, and the percentage gain on the base amount alone.

This page documents the MCP tool findutils:roi_calculator. See the REST reference →

Use in the browser View as Markdown

Call it over MCP

Tool name findutils:roi_calculator · no API keys · 120 requests/min per IP

Claude Code

claude mcp add findutils --transport http https://mcp.findutils.com/

Claude Desktop — claude_desktop_config.json

{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}

Raw JSON-RPC (any MCP client) — verified example

curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "roi_calculator",
      "arguments": {
        "investment_amount": 10000,
        "final_value": 15000,
        "investment_years": 3,
        "additional_costs": 0
      }
    }
  }'

Input schema

Argument	Type	Required	Description
investment_amount	number	yes	Amount invested. Must be > 0.
final_value	number	yes	Value of the investment at the end.
investment_years	number	no	Holding period in years. Must be > 0. Default: 1.
additional_costs	number	no	Fees, taxes, or other costs added to the investment. Default: 0.

Example arguments (verified)

{
  "investment_amount": 10000,
  "final_value": 15000,
  "investment_years": 3,
  "additional_costs": 0
}

Also a REST endpoint

The same tool answers plain HTTP at POST /api/tools/roi-calculator/execute — no key, 60 requests/min.

Open the REST reference for Roi Calculator →

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