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The Tiingo data service is a significant step up from Yahoo in terms of quality and reliability.
Tiingo offers a free service level with usage limitations, or virtually unlimited usage for $30/month.
Whether you use their free or paid service, you must register with them to receive a private API key.
Once you have your API key, you must perform this one-time task:
1.Close RealTest if it is running.
2.Find your RealTest.ini file (it will be in c:\RealTest or wherever you installed RealTest) and open it using a plain text editor such as Notepad.
3.Search for Tiingo to find the line labled TiingoApiKey.
4.Copy and paste your API key after the equals sign.
5.Save RealTest.ini, close Notepad, run RealTest.
You are now able to import from Tiingo. Your key will remain preserved in your RealTest.ini file thereafter unless you delete or replace the file or edit it again and delete the key
In addition to Tiingo stock price data, RealTest also supports TiingoCrypto as a separate data source. Use this DataSource name to import daily bars for any cryptocurrency symbol.
Another RealTest.ini setting, TiingoExchanges, can optionally be used to provide the &exchanges string to send to the Tiingo API when requesting data.
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