ECB Exchange Rates

Official euro reference rates from the European Central Bank: today, any past day since 1999, conversions and history.

Reads the European Central Bank's euro foreign exchange reference rates, the rates used for accounting, invoicing and tax reporting across the EU. Get the full daily list, the rate of one currency on any business day since January 1999, convert an amount between any two published currencies (cross-rated through the euro), or pull a daily series with its minimum, maximum and average. Weekend and holiday dates fall back to the previous business day, and the response says so.

Get started Source code

What you can ask

What was the USD rate on 15 October?Convert 2,500 GBP to EUR at today's ECB rateShow me the EUR/CHF rate for October with the high, low and average

Tools and prices

4 tools

Tool	What it does	Per call
ecb_latest_rates	All published currencies against the euro for the latest business day	€0.002
ecb_rate	One currency's rate for the latest day or a given date, with the previous-business-day fallback explained	€0.002
ecb_convert	Convert an amount between two currencies at the ECB rate of a day, cross-rated through EUR	€0.002
ecb_history	Daily series for a period with first, last, change, min, max and average	€0.002

Charged only when the call succeeds. Listing the tools is free.

How to connect

Add it to Claude

Create a OpenJack account and copy your connection key from your account.

In Claude, open Settings → Connectors → Add custom connector and paste https://ecb-rates.openjack.dev/mcp.

Click Connect. On the connect page enter your connection key and your European Central Bank credentials. They are checked live and stored encrypted.

Requirements

An OpenJack account with credits

FAQ

Which rate is this?

The ECB euro foreign exchange reference rate, fixed around 14:15 CET and published around 16:00 CET on TARGET business days. It is the rate most EU tax authorities and accountants use for conversions; it is not a dealing rate.

What happens on weekends and holidays?

No rate exists for those days. The connector returns the previous business day's rate and says which day it used, so Claude can tell you.

Which currencies are covered?

The roughly 30 currencies in the ECB's daily publication (USD, GBP, JPY, CHF, CNY, BRL, and so on), all quoted against the euro. Other pairs are cross-rated through the euro.

How far back does history go?

To 4 January 1999 for the original currencies; up to five years per call, with long series truncated in the output while the summary covers the whole period.

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