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You can use exchange's public APIs to get historical trade data, but look out for API rate limits as you can get IP based ban - been there.
If you're looking for order book tick by tick data or historical liquidations data, check out https://tardis.dev/ it's not free, but pricing is affordable and you can play around with data samples without API key (API ...
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For generalized attributes for a broad range of species you could also try the Encyclopedia of Life. For example, their data page for Pinus taeda has general attributes for height (base and mature), as well as some phenology traits (but not as granular as a specialized phenology database). The EOL traitbank can be queried by API, and it's also possible to ...
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There are many services that provide OHLC aggregated data for crypto markets both free and paid and in many cases exchanges themselves provide APIs to access that kind of aggregated data (like BitMEX for example), but if you're looking for more granular, high resolution historical tick-by-tick data there isn't that much of a choice or it's very expensive.
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