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

# Currency Rate Source

> Essential currency rate source indicators for tracking foreign exchange rate data providers

<div className="overflow-x-auto">
  <table>
    <thead>
      <tr>
        <th>Source</th>
        <th>Description</th>
        <th>Coverage</th>
        <th>Reliability</th>
        <th>Use Cases</th>
      </tr>
    </thead>

    <tbody>
      <tr>
        <td>
          <strong>ecb</strong>
        </td>

        <td>European Central Bank</td>
        <td>Global currencies vs EUR</td>
        <td>Official, daily</td>
        <td>EU-based transactions, EUR conversions</td>
      </tr>

      <tr>
        <td>
          <strong>fed</strong>
        </td>

        <td>Federal Reserve System (US)</td>
        <td>Major currencies vs USD</td>
        <td>Official, daily</td>
        <td>US-based transactions, USD conversions</td>
      </tr>

      <tr>
        <td>
          <strong>imf</strong>
        </td>

        <td>International Monetary Fund</td>
        <td>190+ currencies, SDR rates</td>
        <td>Official, periodic</td>
        <td>International reporting, SDR calculations</td>
      </tr>

      <tr>
        <td>
          <strong>xe</strong>
        </td>

        <td>XE.com Exchange Rates</td>
        <td>180+ currencies, real-time</td>
        <td>Commercial, frequent</td>
        <td>Live rates, consumer transactions</td>
      </tr>

      <tr>
        <td>
          <strong>oanda</strong>
        </td>

        <td>OANDA Exchange Rates</td>
        <td>190+ currencies, real-time</td>
        <td>Commercial, reliable</td>
        <td>Trading, business conversions</td>
      </tr>

      <tr>
        <td>
          <strong>bank</strong>
        </td>

        <td>Commercial Bank Rates</td>
        <td>Limited, bank-specific</td>
        <td>Varies by bank</td>
        <td>Banking transactions, customer rates</td>
      </tr>

      <tr>
        <td>
          <strong>manual</strong>
        </td>

        <td>Manually Entered Rates</td>
        <td>Custom, as needed</td>
        <td>User-dependent</td>
        <td>Custom scenarios, historical data</td>
      </tr>

      <tr>
        <td>
          <strong>other</strong>
        </td>

        <td>Other Exchange Rate Sources</td>
        <td>Varies</td>
        <td>Varies</td>
        <td>Alternative providers, legacy systems</td>
      </tr>
    </tbody>
  </table>
</div>