# Syllable Counter API

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

Count syllables per word, line, and text with haiku detection and Flesch reading ease.

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

- Slug: `syllable-counter`
- Category: `text`
- Version: `2026-04-22`
- Credits per successful call: 1
- Starts on: free
- Max payload: 262144 bytes
- Privacy mode: `no_body_logs`
- Available on: free, starter, pro, business, scale
- Browser tool: https://miniwebtool.com/syllable-counter/

## Endpoint

`POST https://api.miniwebtool.com/v1/tools/syllable-counter/run`

## Request body

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `text` | `str` | yes |  |
| `per_word_limit` | `int` | no | Maximum number of per-word breakdown rows returned |

## Example request

```json
{
  "text": "An old silent pond\nA frog jumps into the pond\nSplash! Silence again"
}
```

## cURL

```bash
curl -X POST https://api.miniwebtool.com/v1/tools/syllable-counter/run \
  -H 'Authorization: Bearer mwt_live_YOUR_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"text":"An old silent pond\nA frog jumps into the pond\nSplash! Silence again"}'
```

## Response envelope

```json
{
  "request_id": "01K...",
  "tool": "syllable-counter",
  "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 Syllable Counter API do?

Count syllables per word, line, and text with haiku detection and Flesch reading ease. 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: text. Full schema at `https://api.miniwebtool.com/v1/openapi.json`.

### Is this deterministic?

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