Number to Words (12 Languages)
Number to words: spell a number out in English, Dutch, German, French, Spanish, Italian, Portuguese, Polish, Russian, Turkish, Swedish or Japanese, in cardinal, ordinal or currency form. Currency form agrees the number with the currency noun and gives real minor-unit names for 19 currencies (EUR, USD, GBP, CHF, SEK, NOK, DKK, PLN, RUB, TRY, CNY, INR, BRL, MXN, CAD, AUD, NZD, CZK, HUF); any other ISO 4217 code uses a fraction such as 56/100. Values up to 10^15.
Offering
- Provider
- api.duoleads.com
- Method
- GET
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- General Utilities
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://api.duoleads.com/v1/num/words- MIME type
- application/json
- First seen
- 2026-10-16T01:50:38.788Z
- Last seen
- Tags
- number-to-words, spell-number, amount-in-words, numbers, localisation
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.05 USDC
Atomic price: 50000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "50000",
"payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39"
}
]Observed health
- Status
- Healthy
- Latest latency
- 40 ms
- Average latency
- 378 ms
- HTTP status
- 402
- Last checked
- Reachability
- 100% over 13 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"enum": [
"GET"
]
},
"queryParams": {
"type": "object",
"properties": {
"value": {
"type": "string",
"description": "Integer or decimal number, absolute value below 1e15, e.g. 1234 or 1234.56.",
"pattern": "^[+-]?(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?$",
"maxLength": 32
},
"lang": {
"type": "string",
"description": "Language, ISO 639-1. Default en.",
"enum": [
"en",
"nl",
"de",
"fr",
"es",
"it",
"pt",
"pl",
"ru",
"tr",
"sv",
"ja"
],
"maxLength": 64,
"default": "en"
},
"form": {
"type": "string",
"description": "cardinal (default), ordinal, currency or year.",
"enum": [
"cardinal",
"ordinal",
"currency",
"year"
],
"maxLength": 64,
"default": "cardinal"
},
"currency": {
"type": "string",
"description": "ISO 4217 code. Required when form=currency, rejected otherwise.",
"maxLength": 16
},
"case": {
"type": "string",
"description": "lower (default), sentence or title.",
"enum": [
"lower",
"sentence",
"title"
],
"maxLength": 64,
"default": "lower"
}
},
"required": [
"value"
]
}
},
"required": [
"type",
"method"
],
"additionalProperties": false
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"case": {
"default": "lower",
"description": "lower (default), sentence or title.",
"enum": [
"lower",
"sentence",
"title"
],
"maxLength": 64,
"type": "string"
},
"currency": {
"description": "ISO 4217 code. Required when form=currency, rejected otherwise.",
"maxLength": 16,
"type": "string"
},
"form": {
"default": "cardinal",
"description": "cardinal (default), ordinal, currency or year.",
"enum": [
"cardinal",
"ordinal",
"currency",
"year"
],
"maxLength": 64,
"type": "string"
},
"lang": {
"default": "en",
"description": "Language, ISO 639-1. Default en.",
"enum": [
"en",
"nl",
"de",
"fr",
"es",
"it",
"pt",
"pl",
"ru",
"tr",
"sv",
"ja"
],
"maxLength": 64,
"type": "string"
},
"value": {
"description": "Integer or decimal, absolute value below 1e15.",
"maxLength": 32,
"type": "string"
}
},
"required": [
"value"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"currency": {
"properties": {
"code": {
"type": "string"
},
"minor_plural": {
"type": [
"string",
"null"
]
},
"minor_singular": {
"type": [
"string",
"null"
]
},
"minor_units": {
"type": "integer"
},
"unit_plural": {
"type": "string"
},
"unit_singular": {
"type": "string"
}
},
"required": [
"code",
"unit_singular",
"unit_plural",
"minor_singular",
"minor_plural",
"minor_units"
],
"type": [
"object",
"null"
]
},
"form": {
"type": "string"
},
"lang": {
"type": "string"
},
"parts": {
"properties": {
"integer_words": {
"type": "string"
},
"minor_words": {
"type": [
"string",
"null"
]
}
},
"required": [
"integer_words",
"minor_words"
],
"type": [
"object",
"null"
]
},
"rounding_applied": {
"type": "boolean"
},
"value": {
"type": "string"
},
"words": {
"type": "string"
}
},
"required": [
"words",
"value",
"lang",
"form",
"currency"
],
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"description": "RFC 3339 UTC with milliseconds",
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"items": {
"required": [
"id",
"version",
"published"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true
},
"route": {
"const": "/v1/num/words"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}