Docs/Skills/Number to Words Skill

Number to Words Skill

Convert numbers to words

OperationalCredits 2 per callp50 757msData Conversion

Overview

Number to Words works by converting numbers to words using a predefined set of rules. It supports a wide range of numbers and provides the equivalent words in a structured format.

Live Test Number to Words Skill Skill →

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as NumbertoWordsSkill. 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.

Tool call
{
  "name": "NumbertoWordsSkill",
  "arguments": {
    "number": "975.07"
  }
}

You do not name the tool yourself; the model picks it. Asking about 975.07 in the terms this skill covers is enough for it to reach for NumbertoWordsSkill 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"
    }
  }
}

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.

ArgumentTypeDescription
numberRequirednumberThe number to convert to words

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.

Result
{
  "status": "ok",
  "error": null,
  "data": {
    "number": 975.07,
    "words": "nine hundred seventy-five point zero seven",
    "ordinal": "nine hundred seventy-fifth point zero seven",
    "numberOfDigits_numeric": 3,
    "numberOfDigits_words": "three",
    "eachNumber": [
      "nine",
      "seven",
      "five"
    ],
    "afterDecimal": {
      "number": "07",
      "words": [
        "zero",
        "seven"
      ],
      "numberOfDigits_numeric": 2,
      "numberOfDigits_words": "two"
    },
    "locale": "en-US"
  }
}

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.

FieldTypeExampleDescription
numbernumber975.07The original number provided for conversion
wordsstringnine hundred seventy-five point zero sevenThe cardinal word representation of the number
ordinalPremiumstringnine hundred seventy-fifth point zero sevenThe ordinal word representation of the number
numberOfDigits_numericnumber3Count of digits before the decimal point
numberOfDigits_wordsPremiumstringthreeThe digit count expressed as words
eachNumberPremiumarray["nine","seven","five"]Array containing each individual digit as words
afterDecimalobject{…}Breakdown of the digits after the decimal point, or null when the number has no fractional part
afterDecimal.numberstring07Decimal portion of the number as string
afterDecimal.wordsPremiumarray["zero","seven"]Decimal digits represented as individual words
afterDecimal.numberOfDigits_numericnumber2Count of digits after the decimal point
afterDecimal.numberOfDigits_wordsPremiumstringtwoDecimal digit count expressed as words
localestringen-USLanguage locale code for the conversion

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.

StatusWhat it means
400 / 422The arguments did not validate. The message names the offending one.
401The OAuth session is invalid or expired — reconnect the server.
403Blocked by a key restriction or an IP allow-list. Never a bad identity.
404This skill is not part of VerveKit. Check the catalog.
429Out of credits, or a brief rate limit. The message tells them apart.

A call costs 2 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.

Use cases

Check Printing Systems
When printing legal bank checks, payroll software converts dollar totals into written cardinal words to prevent tampering with numeric amounts.
Legal Contract Drafting
Contract automation platforms convert monetary liabilities and lease terms into spelled-out words to accompany raw figures in formal agreements.
Primary Math Quizzes
Educational apps generate vocabulary flashcards and spelling tests by matching raw digits with their corresponding cardinal word strings.
Audio Receipt Pronunciation
To read store totals aloud over phone support or smart speakers, accessibility services convert numeric totals into speakable word phrasing.

Other ways to use Number to Words Skill

Set up Number to Words 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.

Call it as a REST APIOne HTTPS endpoint and an x-api-key header, with SDKs for Node, Python and .NET.APIVerve →Reference →
Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.VerveSheets →Reference →
Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.VerveContext →Reference →

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