# Coffee Ratio by Cups Calculator API

> For the complete documentation index, see [llms.txt](/llms.txt).

Calculate coffee and water amounts by cup count using standard, strong, light or custom brew ratios.

Use this endpoint to add the tool to your app, site, workflow, or agent without rebuilding formulas, validation, examples, and docs.

- Slug: `coffee-ratio-by-cups-calculator`
- Category: `food`
- Version: `2026-04-22`
- Credits per successful call: 1
- Starts on: free
- Max payload: 65536 bytes
- Privacy mode: `hash_only`
- Available on: free, starter, pro, business, scale

## Endpoint

`POST https://api.miniwebtool.com/v1/tools/coffee-ratio-by-cups-calculator/run`

## Request body

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `cups` | `float` | no | number of cups |
| `cup_size_ml` | `float` | no | water volume per cup in milliliters |
| `strength` | `str` | no | standard | strong | light | custom Choices: standard, strong, light, custom |
| `custom_ratio` | `float` | no | water-to-coffee ratio when strength is custom |
| `coffee_on_hand_g` | `float` | no | optional coffee on hand for a cup-yield estimate |

## Example request

```json
{
  "cups": 4,
  "cup_size_ml": 240,
  "strength": "standard",
  "custom_ratio": 16,
  "coffee_on_hand_g": 0
}
```

## cURL

```bash
curl -X POST https://api.miniwebtool.com/v1/tools/coffee-ratio-by-cups-calculator/run \
  -H 'Authorization: Bearer mwt_live_YOUR_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"cups":4,"cup_size_ml":240,"strength":"standard","custom_ratio":16,"coffee_on_hand_g":0}'
```

## Response envelope

```json
{
  "request_id": "01K...",
  "tool": "coffee-ratio-by-cups-calculator",
  "tool_version": "2026-04-22",
  "credits_used": 1,
  "result": {}
}
```

## Errors

Errors are RFC 7807 `application/problem+json`. Branch on `code`, not `title`.

## MCP

Agents can discover and call this tool through `https://api.miniwebtool.com/mcp` or `https://api.miniwebtool.com/v1/mcp` using MCP `tools/list` and `tools/call`.

## Frequently asked

### What does the Coffee Ratio by Cups Calculator API do?

Calculate coffee and water amounts by cup count using standard, strong, light or custom brew ratios. Use it to add this utility without rebuilding formulas, validation, examples, and documentation.

### How much does one call cost?

1 credit per successful call. Failed calls do not bill.

### What parameters are required?

Required fields: (none). Full schema at `https://api.miniwebtool.com/v1/openapi.json`.

### Is this deterministic?

Yes. Same input, same output. Tool version: 2026-04-22.