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Number Words – English Cardinal & Ordinal
x402
Number Words – English Cardinal & Ordinal is a paid API for AI agents from number-words.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-31).
Converts a numeric value into English words, returning both cardinal (one hundred five) and ordinal (one hundred fifth) forms, with options for US/UK style, hyphenation, and negative prefix.
Price / call$0.02
Success—
StatusUnknown
How this service works
A number as English words: cardinal and ordinal, US or UK 'and' style, hyphenation, decimals, up to 36 digits.
Output
Returns a JSON object containing the cardinal word form (e.g. 'one thousand and five'), the ordinal word form (e.g. 'one thousand and fifth'), a numeric ordinal (e.g. '1,005th'), the style used (us/uk), digit count, and the original source value. May include a summary and degraded flag if the input was at the edge of supported range.
Example use cases
Legal document number formatting
“I need to write $2,500,000 as English words for a legal contract — give me the cardinal form, US style, with hyphens for compound numbers.”
Ordinal ranking label generation
“What's the ordinal word form of 21 in English? I need to label it as 'twenty-first' for a leaderboard caption.”
Accessibility text for screen readers
“Convert -3.75 to English words for a screen reader — use 'negative' instead of 'minus' and give me both the cardinal and ordinal spellings.”
Technical details
Endpoint
GEThttps://number-words.x402tookit.com/english-words?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need precise English-language word representations of numbers — cardinal and ordinal — with control over US vs UK style, hyphenation, and negative prefix. It supports very large integers (up to 36 digits) and decimals (up to 20 decimal places), making it suitable for legal documents, accessibility text, financial writing, and localized content. Prefer it over generic LLM text generation when deterministic, rule-correct spelling of numbers is required.
Side effects
- Missing required 'value' query parameter returns an error
- Value exceeding 36 digits or 20 decimal places may be rejected or degraded
- Non-numeric input string returns a validation error
- Invalid enum value for 'style' or 'negative' returns a bad request error
- Network or payment authorization failure returns a 402 or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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