Vowel Counter Skill

Overview

Vowel Counter walks `text` one character at a time. Each character is Unicode-normalized into its base letter plus any accents, the accents are dropped and the result is lowercased. If what remains is a single a, e, i, o or u, the character counts as a vowel and is added to that vowel's slot in `vowelBreakdown`. So "É", "ï" and "ô" count as e, i and o, and uppercase and lowercase are counted together.

Any other character that Unicode classifies as a letter counts as a consonant. That includes y and w in every position, letters such as ß and ø that do not decompose to a vowel, and letters from non-Latin scripts: Cyrillic, Greek, Arabic or CJK characters are all counted as consonants because only the five Latin vowels are recognized as vowels. Digits, spaces, punctuation and emoji are ignored by both counts.

`totalLetters` is `vowels` plus `consonants`. `vowelPercentage` and `consonantPercentage` are shares of `totalLetters`, not of the whole text, rounded to two decimals; they are 0 when the text contains no letters. `textLength` is the length of the input in JavaScript string units, which includes spaces, punctuation and line breaks and counts most emoji as two.

On the Free plan the percentages, the five per-vowel counts inside `vowelBreakdown` and `textLength` are null; `vowels`, `consonants` and `totalLetters` are returned on every plan.

Live Test Vowel Counter Skill Skill →

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as VowelCounterSkill. It is read-only and open-world — it fetches and never mutates anything on your side — so most clients call it without asking you to confirm.

{
  "name": "VowelCounterSkill",
  "arguments": {
    "text": "Hello World"
  }
}

You do not name the tool yourself; the model picks it. Asking about Hello World in the terms this skill covers is enough for it to reach for VowelCounterSkill on its own — naming it explicitly also works, and is the way to force the call.

Connecting

One server URL covers every skill in the catalog, including this one. Authorization is OAuth: the client opens a browser once, and there is no key to paste into a config file.

{
  "mcpServers": {
    "vervekit": {
      "url": "https://api.vervekit.com/v1/mcp"
    }
  }
}

https://api.vervekit.com/v1/mcp

Per-client setup — Claude, Cursor, VS Code, ChatGPT — is on the MCP setup page.

Arguments

These are the properties on the tool's inputSchema, so a well-behaved client validates them before the call is made. Premium arguments are accepted on every plan but only take effect on plans that include them.

What the model gets back

The result carries a structuredContent object matching the tool's declared outputSchema, so a client reads fields without parsing prose. status is "ok" and error is null on success; a null field means the value was not available for that input, not that the call failed.

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{
  "status": "ok",
  "error": null,
  "data": {
    "vowels": 31,
    "consonants": 58,
    "totalLetters": 89,
    "vowelPercentage": 34.83,
    "consonantPercentage": 65.17,
    "vowelBreakdown": {
      "a": 8,
      "e": 11,
      "i": 3,
      "o": 7,
      "u": 2
    },
    "textLength": 110
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Failure modes

Errors come back as tool errors carrying a sentence the model can act on, not a bare status code. Error handling covers the full list.

A call costs 1 credit each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.

Use cases

Linguistic Analysis

Analyze vowel patterns and distributions in text for linguistic research

Readability Testing

Assess text complexity based on vowel-consonant ratios

Educational Tools

Create exercises for teaching phonetics and letter recognition

Text Statistics

Generate detailed character frequency reports for writing analysis

Other ways to use Vowel Counter Skill

Set up Vowel Counter Skill on VerveKit, or reach the same source a different way. Your VerveKit account and credits work on all of them — one key, one balance.

Related

More in Text Processing: