# Savings Calculator — REST API endpoint `savings-calculator`

Return the future value of savings with compound interest and monthly contributions: total value, total contributions, total interest, and a year-by-year table of balance, cumulative contributions, and interest earned that year. Rate is a yearly percentage.

- Category: finance
- MCP server: https://mcp.findutils.com/ (Streamable HTTP, no API keys, 120 req/min per IP)
- REST endpoint: POST https://api.findutils.com/api/tools/savings-calculator/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/api/savings-calculator/
- Same tool on the other surface: https://findutils.com/mcp/savings-calculator/

## Call the endpoint (verified example)

```bash
curl -X POST https://api.findutils.com/api/tools/savings-calculator/execute \
  -H "Content-Type: application/json" \
  -d '{
    "initial_deposit": 10000,
    "monthly_contribution": 500,
    "interest_rate": 5,
    "years": 10,
    "compound_frequency": 12
  }'

# Parameter schema
curl https://api.findutils.com/api/tools/savings-calculator
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `initial_deposit` | number | no | Starting balance. Default: 0. |
| `monthly_contribution` | number | no | Amount added every month. Default: 0. |
| `interest_rate` | number | yes | Yearly interest rate in percent (5 = 5%). |
| `years` | integer | yes | Saving period in years. |
| `compound_frequency` | integer (1 \| 2 \| 4 \| 12 \| 365) | no | Times per year the deposit compounds: 1, 2, 4, 12, or 365. Default: 12. |

Example arguments (verified):

```json
{
  "initial_deposit": 10000,
  "monthly_contribution": 500,
  "interest_rate": 5,
  "years": 10,
  "compound_frequency": 12
}
```

OpenAPI 3.1 spec: https://findutils.com/api/openapi.json · Interactive docs: https://findutils.com/api/docs/

## Also an MCP tool

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

Then ask the client to call `findutils:savings_calculator`. Full MCP reference: https://findutils.com/mcp/savings-calculator/

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