Currency Exchange Rates

x402

Currency Exchange Rates is a paid API for AI agents from data.tollkit.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).

Returns the exchange rate (and optionally converted amount) between two currencies for a given date, paid per-call via x402 USDC.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

SEC filings and financials, IP lookup, US weather, airport delays, address geocoding and exchange rates. Other Tollkit tools are described at: https://extract.tollkit.dev/openapi.json, https://attest.tollkit.dev/openapi.json, https://web.tollkit.dev/openapi.json, https://chain.tollkit.dev/openapi.json.

Output

Returns the exchange rate between the specified currency pair for the requested date, along with the converted amount if an input amount was provided. Weekend dates resolve to the previous business day's rate.

Example use cases

Historical invoice currency conversion

“I need to convert 1500 GBP to USD using the rate from 2025-03-28 — can you look that up for me?”

Travel budget planning

“What's the exchange rate from USD to JPY for today, and how much would 2000 dollars convert to in yen?”

Financial report FX reconciliation

“Pull the EUR to CAD exchange rate for 2025-01-15 so I can reconcile a cross-currency transaction in our books.”

Technical details

Endpoint

POSThttps://data.tollkit.dev/fx?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a quick, accountless, pay-per-use FX rate lookup for a specific currency pair and recent date (within 90 days), especially in contexts where setting up a traditional API subscription is impractical. Ideal for agents doing one-off or occasional currency conversions without requiring registration or an API key.

Side effects

Invalid 3-letter currency code returns an error
Date outside the 90-day lookback window is rejected
Weekend date without a prior business day rate may fail or auto-resolve
Payment failure via x402 if insufficient USDC balance
Malformed date format (not YYYY-MM-DD) causes a validation error
Unsupported or exotic currency pair may return no data

Input

Schema · Request body

Field	Type	Description
to	string
date	string	YYYY-MM-DD within the last 90 days; weekends use the previous business day.
from	string
amount	number

Output

Schema · Response

{
  "type": "json",
  "example": {
    "to": "EUR",
    "from": "USD",
    "rate": 0.8908686,
    "amount": 100,
    "notice": "These reference rates are published free of charge by the European Central Bank at https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/index.en.html. They are for information purposes only, not for transactions.",
    "source": "European Central Bank euro foreign exchange reference rates",
    "converted": 89.08685969,
    "rate_date": "2026-10-02",
    "requested_date": null
  }
}

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