# Daily Habit Calculator — MCP tool `findutils:daily_habit_calculator`

Calculate how a daily habit adds up over a week, a month (30 days), a year (365 days), or a custom date range: total units, total cost, and per-week/month/year amounts. Works for coffee cups, water glasses, steps, pages, cigarettes, or any custom unit.

- Category: calculators
- 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/daily-habit-calculator/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/mcp/daily-habit-calculator/
- Same tool on the other surface: https://findutils.com/api/daily-habit-calculator/

## Connect

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

Claude Desktop (`claude_desktop_config.json`):

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

## Call the tool (verified example)

```bash
curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "daily_habit_calculator",
      "arguments": {
        "daily_amount": 3,
        "category": "coffee",
        "period": "month"
      }
    }
  }'
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `daily_amount` | number | yes | Amount per day (e.g. 3 cups). |
| `category` | string (coffee \| tea \| water \| soda \| snacks \| cigarettes \| steps \| pages \| custom) | no | Habit category. Sets the default unit. Default: `"coffee"`. |
| `unit` | string | no | Unit label override (e.g. "cups"). Defaults to the category unit. |
| `cost_per_unit` | number | no | Cost of one unit. Omit or 0 when there is no cost. Default: `0`. |
| `period` | string (week \| month \| year \| custom) | no | week = 7 days, month = 30 days, year = 365 days, custom = start_date..end_date inclusive. Default: `"month"`. |
| `start_date` | string | no | Custom period start (YYYY-MM-DD). Required when period is "custom". |
| `end_date` | string | no | Custom period end (YYYY-MM-DD), inclusive. Required when period is "custom". |

Example arguments (verified):

```json
{
  "daily_amount": 3,
  "category": "coffee",
  "period": "month"
}
```

## Also a REST endpoint

```bash
curl -X POST https://api.findutils.com/api/tools/daily-habit-calculator/execute \
  -H "Content-Type: application/json" \
  -d '{
    "daily_amount": 3,
    "category": "coffee",
    "period": "month"
  }'

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

Full REST reference: https://findutils.com/api/daily-habit-calculator/ · OpenAPI 3.1 spec: https://findutils.com/api/openapi.json

---
Full catalog: POST https://mcp.findutils.com/ with method `tools/list` · https://findutils.com/mcp/ · https://findutils.com/llms.txt