Mekler AI Currency Reference Converter

x402

Mekler AI Currency Reference Converter is a paid API for AI agents from api.mekler.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-30).

Converts a currency amount between two ISO 4217 currency codes using dated public reference rates with explicit rounding, rate age, and source attribution.

Price / call$0.005

Seller volume →—

Success—

StatusUnknown

How this service works

Convert an amount between two currency codes using dated public reference rates and decimal arithmetic. Return the rate date, age, source and explicit rounding. Optional historical date from 1999-01-04; holidays may use earlier observations. No executable payment quote, intraday market feed or trading execution.

Output

A JSON object containing: the converted amount (8 decimal places, ROUND_HALF_EVEN), the exchange rate used, the rate date and age in days, the source name and URL, the rate type ('reference'), rounding description, requested date, observed timestamp, and a limitations array clarifying this is not an executable payment quote or intraday price.

Example use cases

Historical FX rate for invoice reconciliation

“What was the reference exchange rate from GBP to USD on 2024-06-12, and how much would 3250 GBP have been worth in USD on that date?”

Budget estimate in local currency

“I'm planning a trip and want to know how much 2000 USD converts to in Japanese yen at today's reference rate — include the source and the rate date.”

Cross-currency reporting for accounting

“Convert 47500 EUR to CHF using the public reference rate from 2025-01-31 and tell me the exact rate, rounding method, and where the rate came from.”

Technical details

Endpoint

POSThttps://api.mekler.ai/v1/finance/currencies/convert-reference-amount?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a traceable, dated reference-rate currency conversion with explicit source attribution and rounding disclosure — especially for accounting, reporting, or compliance contexts where an audit trail matters. It supports historical rates back to 1999-01-04, making it suitable for retrospective financial calculations. Do not use it for live trading prices, payment execution, or intraday FX quotes.

Side effects

Unsupported or unknown currency code returns an error
Historical date before 1999-01-04 is out of range
Holiday or missing date falls back to the nearest prior observation; inspect rate_date and age_days
Network or upstream Frankfurter API unavailability
Malformed amount string not matching the required pattern
Invalid date format not conforming to ISO 8601

Input

Schema · Request body

Field	Type	Description
base	string
date	string
quote	string
amount	string
request_id	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "base": "USD",
    "rate": "0.9",
    "quote": "EUR",
    "amount": "100.00",
    "source": "Frankfurter daily blended reference rates",
    "status": "ok",
    "age_days": 1,
    "rounding": "8 decimal places, ROUND_HALF_EVEN; not currency minor-unit rounding",
    "rate_date": "2026-10-19",
    "rate_type": "reference",
    "source_url": "https://api.frankfurter.dev/v2/rate/usd/eur",
    "limitations": [
      "Reference conversion only; not an executable quote, payment or intraday trading price.",
      "Historical requests may use an earlier observation for holidays or missing dates; inspect rate_date and age_days.",
      "Source coverage and rates may change; conversion uses the dated retrieved observation."
    ],
    "observed_at": "2026-10-20T00:00:00Z",
    "requested_date": null,
    "converted_amount": "90.00000000"
  }
}

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