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.
{
"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"
}
}
}https://api.vervekit.com/v1/mcpPer-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.
| Argument | Type | Description |
|---|---|---|
numberRequired | number | The 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.
{
"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.
| Field | Type | Example | Description |
|---|---|---|---|
number | number | 975.07 | The original number provided for conversion |
words | string | nine hundred seventy-five point zero seven | The cardinal word representation of the number |
ordinalPremium | string | nine hundred seventy-fifth point zero seven | The ordinal word representation of the number |
numberOfDigits_numeric | number | 3 | Count of digits before the decimal point |
numberOfDigits_wordsPremium | string | three | The digit count expressed as words |
eachNumberPremium | array | ["nine","seven","five"] | Array containing each individual digit as words |
afterDecimal | object | {…} | Breakdown of the digits after the decimal point, or null when the number has no fractional part |
afterDecimal.number | string | 07 | Decimal portion of the number as string |
afterDecimal.wordsPremium | array | ["zero","seven"] | Decimal digits represented as individual words |
afterDecimal.numberOfDigits_numeric | number | 2 | Count of digits after the decimal point |
afterDecimal.numberOfDigits_wordsPremium | string | two | Decimal digit count expressed as words |
locale | string | en-US | Language 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.
| Status | What it means |
|---|---|
400 / 422 | The arguments did not validate. The message names the offending one. |
401 | The OAuth session is invalid or expired — reconnect the server. |
403 | Blocked by a key restriction or an IP allow-list. Never a bad identity. |
404 | This skill is not part of VerveKit. Check the catalog. |
429 | Out 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.
Related
More in Data Conversion: