> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vistazo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Exchange Rates

> Daily currency exchange rates

Daily currency exchange rates for 30+ currencies — European Central Bank reference rates, current and historical back to 1999.

Exchange-rate data from the European Central Bank, via Frankfurter. Upstream API: [frankfurter.dev](https://frankfurter.dev/).

**Endpoint** `https://mcp.vistazo.ai/frankfurter/mcp`

| Tool                              | What it does  |           |
| --------------------------------- | ------------- | --------- |
| [`exchange_rate`](#exchange_rate) | Exchange rate | Read-only |
| [`latest_rates`](#latest_rates)   | Latest rates  | Read-only |
| [`currencies`](#currencies)       | Currencies    | Read-only |

## exchange\_rate

`Read-only` · `Reaches outside Vistazo`

Daily currency exchange-rate time series over a date range — one row per day with a numeric column per target currency, ready to chart as multi-series lines. European Central Bank reference rates (per working day, back to 1999). Give a base currency (default USD) and target `symbols`; both default to a basket of majors and the trailing year. Weekends/holidays are omitted.

## latest\_rates

`Read-only` · `Reaches outside Vistazo`

The most recent exchange rates for a base currency against many currencies — one row per currency (\{currency, rate}), good for a bar chart or snapshot table. Default base USD.

## currencies

`Read-only` · `Reaches outside Vistazo`

List the supported currencies as \{code, name} — the 30+ ECB reference currencies. Use to validate a code or populate a currency picker.