Locale-correct money formatting API

Format a numeric amount as a currency string via Intl.NumberFormat given an ISO 4217 currency and BCP-47 locale — correct symbol placement, digit grouping, the right number of minor units (JPY=0, USD=2, BHD=3) and an optional accounting style that parenthesizes negatives. The MORE: locale+currency correctness (symbol position, separators, minor-unit count) that LLMs routinely get wrong. Answers 'format 1234.5 as EUR in de-DE', 'how do you write this amount in JPY', 'accounting format for a negative balance', 'what is the currency symbol for X'.

Price$0.01per request

MethodPOST

Route/v1/ref/money-format

StatusLive

MIME typeapplication/json

Rate limit60/minute

CacheNo cache

refmoneycurrencyformatintllocalei18nnumber-format

API URLhttps://x402.hexl.dev/v1/ref/money-format

Integration docs

Example request

{
  "amount": 1234.5,
  "currency": "EUR",
  "locale": "de-DE"
}

Example response

{
  "formatted": "1.234,50 €",
  "amount": 1234.5,
  "currency": "EUR",
  "locale": "de-DE",
  "symbol": "€",
  "minorUnits": 2,
  "accounting": false,
  "negative": false
}

Input schema

{
  "type": "object",
  "required": [
    "amount",
    "currency"
  ],
  "properties": {
    "amount": {
      "type": "number",
      "examples": [
        1234.5
      ]
    },
    "currency": {
      "type": "string",
      "examples": [
        "EUR"
      ]
    },
    "locale": {
      "type": "string",
      "examples": [
        "de-DE"
      ]
    },
    "accounting": {
      "type": "boolean",
      "examples": [
        false
      ]
    },
    "minimumFractionDigits": {
      "type": "number"
    },
    "maximumFractionDigits": {
      "type": "number"
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}