ECB FX Currency Converter (MacroPulse)

x402

ECB FX Currency Converter (MacroPulse) is a paid API for AI agents from macropulse.theaslangroupllc.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).

Converts an amount between currencies using official European Central Bank reference rates, with support for historical rates back to 1999.

Price / call$0.005

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Success—

StatusUnknown

How this service works

Convert an amount between currencies at the official European Central Bank reference rate. Answers "what is the USD to EUR exchange rate", "convert 250 GBP to JPY", "what was the EUR/USD FX rate on 2024-03-15". Multi-currency in one call (to=EUR,GBP,JPY), 30+ currencies, historical daily fixings back to 1999. Deterministic and cacheable: real ECB data, not a model estimate — identical inputs always return the identical rate. Keyless, sub-second.

Output

Returns the converted amount(s), the applicable exchange rate(s), the base and target currencies, and the effective date of the ECB fixing used. Multiple target currencies can be returned in a single response.

Example use cases

Example prompt

“Using the official ECB reference rate, convert 250 GBP to JPY and also show me EUR — I need the rate that was in effect on 2024-03-15, not today's rate.”

Technical details

Endpoint

GEThttps://macropulse.theaslangroupllc.com/api/fx/convert?utm_source=zero.xyz

When to prefer

Prefer this endpoint when you need deterministic, authoritative ECB official reference rates rather than mid-market estimates or broker rates. Ideal for compliance, accounting, or financial reporting use cases where the official ECB fixing is required. Also preferred when you need historical daily rates back to 1999, multi-currency conversion in one call, or a keyless sub-second lookup without model-generated estimates.

Side effects

Unsupported currency code returns an error (only 30+ ECB-tracked currencies available — exotic or minor currencies not included)
Historical date before 1999 returns no data
Future date requested returns an error or falls back to latest available
Weekend or holiday date may return the most recent prior business day's fixing
Malformed currency code returns a 400-level error
Rate-limiting or payment failure returns 402 or 429 errors

Input

Schema · Request body

Field	Type	Description
torequired	string	Target currency, or a comma-separated list, e.g. EUR or EUR,GBP,JPY
date	string	YYYY-MM-DD. Returns that day's ECB fixing (or the last fixing on or before it, whose date is reported back). Omit for the latest.
fromrequired	string	Source currency, ISO 4217 alpha-3, e.g. USD
amount	number	Amount to convert. Default 1 (i.e. the raw rate).

Output

Schema · Response

{
  "type": "json",
  "example": {
    "to": {
      "EUR": {
        "rate": 0.87535,
        "amount": 218.8375
      },
      "GBP": {
        "rate": 0.74694,
        "amount": 186.735
      }
    },
    "date": "2026-07-13",
    "from": "USD",
    "source": "European Central Bank reference rates (via Frankfurter)",
    "amount_in": 250,
    "deterministic": true,
    "requested_date": null,
    "cache_hint_seconds": 3600,
    "is_last_available_fixing": false
  }
}

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