# WAR Calculator API

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

Estimate simplified baseball WAR for position players or pitchers.

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

- Slug: `war-calculator`
- Category: `sports`
- 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/war-calculator/

## Endpoint

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

## Request body

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `player_type` | `str` | no | position | pitcher Choices: position, pitcher |
| `pa` | `int` | no |  |
| `hits` | `int` | no |  |
| `doubles` | `int` | no |  |
| `triples` | `int` | no |  |
| `home_runs` | `int` | no |  |
| `walks` | `int` | no |  |
| `hbp` | `int` | no |  |
| `stolen_bases` | `int` | no |  |
| `caught_stealing` | `int` | no |  |
| `position` | `str` | no | C | 1B | 2B | 3B | SS | LF | CF | RF | DH Choices: C, 1B, 2B, 3B, SS, LF, CF, RF, DH |
| `innings_played` | `float` | no |  |
| `errors` | `int` | no |  |
| `league_avg_obp` | `float` | no |  |
| `league_avg_slg` | `float` | no |  |
| `innings_pitched` | `float` | no |  |
| `earned_runs` | `int` | no |  |
| `strikeouts` | `int` | no |  |
| `walks_allowed` | `int` | no |  |
| `hits_allowed` | `int` | no |  |
| `home_runs_allowed` | `int` | no |  |
| `league_era` | `float` | no |  |
| `league_fip` | `float` | no |  |
| `pitcher_type` | `str` | no | SP | RP Choices: SP, RP |

## Example request

```json
{
  "player_type": "position",
  "pa": 600,
  "hits": 150,
  "doubles": 30,
  "triples": 3,
  "home_runs": 25,
  "walks": 60,
  "hbp": 5,
  "stolen_bases": 15,
  "caught_stealing": 5,
  "position": "SS",
  "innings_played": 1350,
  "errors": 10,
  "league_avg_obp": 0.32,
  "league_avg_slg": 0.41
}
```

## cURL

```bash
curl -X POST https://api.miniwebtool.com/v1/tools/war-calculator/run \
  -H 'Authorization: Bearer mwt_live_YOUR_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"player_type":"position","pa":600,"hits":150,"doubles":30,"triples":3,"home_runs":25,"walks":60,"hbp":5,"stolen_bases":15,"caught_stealing":5,"position":"SS","innings_played":1350,"errors":10,"league_avg_obp":0.32,"league_avg_slg":0.41}'
```

## Response envelope

```json
{
  "request_id": "01K...",
  "tool": "war-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 WAR Calculator API do?

Estimate simplified baseball WAR for position players or pitchers. 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.