{"uid":"cap_Kkd2WKV1ibBL4yoWLj97H","slug":"number-to-words-converter-cardinal-ordinal-currency-108c1ed1","name":"Number to Words Converter (Cardinal, Ordinal, Currency)","description":"Spell a number in English words: cardinal, ordinal, or currency (dollars and cents) form for checks and invoices.","url":"https://api.24klabs.ai/api/v1/number-to-words","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"form":{"type":"string"},"number":{"type":"number"}}},"responseSchema":{"type":"json","example":{"form":"cardinal","words":"one thousand two hundred thirty-four","number":1234}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_bdNtetNhCpdGVzXQ7NKqd","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts a numeric value into its English word representation in cardinal, ordinal, or currency (dollars and cents) form for use in checks, invoices, and documents.","exampleAgentPrompt":"Can you write out the number 4827.50 in English words as a currency amount for a check — like 'Four Thousand Eight Hundred Twenty-Seven Dollars and Fifty Cents'?","exampleUseCases":[{"title":"Check amount in written words","prompt":"I need to write out $2,345.75 in words for a paper check — give me the full currency spelling like 'Two Thousand Three Hundred Forty-Five Dollars and Seventy-Five Cents'."},{"title":"Ordinal number for event ranking","prompt":"What is 53 written out as an ordinal number in English words, like 'fifty-third'?"},{"title":"Invoice written amount field","prompt":"For an invoice I'm generating, I need the number 10000 spelled out in cardinal English words — something like 'Ten Thousand'."}],"resultDescription":"A string containing the number expressed in English words in the requested form: cardinal (e.g. 'forty-two'), ordinal (e.g. 'forty-second'), or currency (e.g. 'Forty-Two Dollars and No Cents'), ready to embed in documents, checks, or invoices.","failureModes":["Invalid or non-numeric input returns an error","Unsupported format type (not cardinal/ordinal/currency) returns a validation error","Extremely large numbers may exceed supported range","Missing required fields returns a 400 bad request"],"whenToPreferThis":"Choose this endpoint when you need to render a number as English words for formal documents such as checks, invoices, contracts, or legal forms — especially when cardinal, ordinal, or currency formatting is required. Prefer this over generic text generation APIs when you need deterministic, consistently formatted output without the overhead of an LLM.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:56:35.401Z","isFirstParty":false}