The files in /data/ (the monthly gap datasets and their data dictionary) are licensed under the
Creative Commons Attribution 4.0 International licence (CC BY 4.0): https://creativecommons.org/licenses/by/4.0/

You may copy, share and adapt them for any purpose, including commercially, if you credit the source:
"Michael H., fairvaluegaps.com, Fair value gaps detected on forex pairs and gold, monthly" with a link to https://fairvaluegaps.com/data/.

What the files are: gaps our scanner derived from Dukascopy public data feed, 5-minute candles, delayed about an hour. Gaps are found with the site's one rule on candles built from that feed; only derived gaps are published, never candles.
The licence covers our derived data only. It does not give any right in the underlying price feed.
Counts and times of what price did to gaps. Not advice.