On 10/10/22 Mon, 10 Oct 2022 09:50:07 -0400, john <jra...@ceridwen.us> wrote:
The alphavantage module in Finance::Quote throttles the requests to comply with AlphaVantage's limit. Most stocks and funds supported by AlphaVantage are also available from yahoo_json, but currency exchange rates are not. For non-US exchanges the symbols might be different so check on finance.yahoo.com <http://finance.yahoo.com/> when switching sources. Yahoo_json isn't throttled.
I am looking at creating a Currency module using Yahoo. The data is available, just need to create the symbol Yahoo uses. For example, to get how many Euros per dollar the symbol is USDEUR=X. Should be trivial to create and retrieve data, then supply back to GnuCash as expected.
While researching that, I am also looking at getting data from https://currencyfreaks.com/. This would necessitate users getting another API key. Shortfall is their free API is limited to 1000 per month.
There's a couple more in my mind, one was limited to 250 per month. If anyone comes across a currency API source that looks promising, post to the "Additional Currency Source" discussion at the Github F::Q repository - https://github.com/finance-quote/finance-quote/discussions/239. Thanks!
Note that most of the other sources rely on screen-scraping and are therefore a bit brittle in the face of layout changes to the source's websites.
Correct, the last year has seen quite a few changes in websites that affected modules. As a matter of fact, just as I was preparing to push F::Q v1.53 to CPAN a user reported that the AEX.pm module is now not working.
Some time ago, Vincent L was making changes to TPS.pm to account for a recent change of URL. It changed again not too long after he merged his original fixes/changes!
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