# Mechanical Advantage Calculator API

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

Calculate ideal and efficiency-adjusted mechanical advantage for levers, pulleys, ramps and gears.

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

- Slug: `mechanical-advantage-calculator`
- Category: `miscellaneous`
- 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
- Browser tool: https://miniwebtool.com/mechanical-advantage-calculator/

## Endpoint

`POST https://api.miniwebtool.com/v1/tools/mechanical-advantage-calculator/run`

## Request body

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `machine` | `str` | no | lever | pulley | inclined_plane | gear Choices: lever, pulley, inclined_plane, gear |
| `input_a` | `float` | no | effort arm, rope segments, ramp length, or driver teeth |
| `input_b` | `float` | no | load arm, unused pulley placeholder, ramp height, or driven teeth |
| `efficiency` | `float` | no | mechanical efficiency percent |
| `load` | `float` | no | optional load for required-effort calculation |

## Example request

```json
{
  "machine": "lever",
  "input_a": 2,
  "input_b": 1,
  "efficiency": 90,
  "load": 100
}
```

## cURL

```bash
curl -X POST https://api.miniwebtool.com/v1/tools/mechanical-advantage-calculator/run \
  -H 'Authorization: Bearer mwt_live_YOUR_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"machine":"lever","input_a":2,"input_b":1,"efficiency":90,"load":100}'
```

## Response envelope

```json
{
  "request_id": "01K...",
  "tool": "mechanical-advantage-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 Mechanical Advantage Calculator API do?

Calculate ideal and efficiency-adjusted mechanical advantage for levers, pulleys, ramps and gears. 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.