{"uid":"cap_FxQ3qRGFVxCSTUlCEN2BP","slug":"numeral-systems-integer-to-words-2a49bacb","name":"Numeral Systems – Integer to Words","description":"Spell an integer out in English words, e.g. 123 → \"one hundred twenty-three\". Negatives are prefixed with \"minus\".","url":"https://numeral.openverbs.com/v1/words","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["number"],"properties":{"number":{"type":"integer","maximum":1000000000000000,"minimum":-1000000000000000,"description":"The integer to spell out."}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"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_ac1KBDbBq3NKCS7_12tvX","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 an integer number into its spelled-out English word representation","exampleAgentPrompt":"Can you spell out the number 1500 in words for me?","exampleUseCases":[{"title":"Invoice amount in words","prompt":"I need to write 47250 in words on a formal invoice — can you spell it out for me?"},{"title":"Cheque writing helper","prompt":"What's the written-word form of -3200 for filling out a cheque?"},{"title":"Accessibility text for screen readers","prompt":"Spell out 1000000000 in full English words so I can use it in an accessible label for a screen reader."}],"resultDescription":"The endpoint returns the spelled-out English word representation of the provided integer, e.g. 42 becomes 'forty-two' or 1500 becomes 'one thousand five hundred'.","failureModes":["Number exceeds maximum allowed value (1,000,000,000,000,000) or is below minimum (-1,000,000,000,000,000) — returns a validation error","Non-integer or float values are rejected since the schema requires an integer type","Missing required 'number' field in the body results in a schema validation error","Network or service unavailability returns a 5xx error"],"whenToPreferThis":"Choose this endpoint when you need to convert integers to their English written-word form, especially for use cases like legal documents, cheques, invoices, accessibility labels, or anywhere numeric digits must be expressed as text. It supports a wide range including negatives and very large numbers up to one quadrillion.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:41:21.274Z","isFirstParty":false}