"Multi Wallets" don't tend to offer console versions with APIs etc... they tend to be focused on the "lowest common denominator" and offer shiny mobile/desktop wallets for users wanting to deal with all the altcoins etc.
If being able to interact programmatically with the wallet is an essential requirement, you might need to consider looking at some of the custodial offerings (ie. exchanges) that have comprehensive APIs etc.
The downside (aside from the custodial nature and lack of control of keys etc) being that fees and minimum amounts associated with exchanges can be pretty brutal... for instance I just looked at withdrawing from an exchange and their minimum fee is hard coded at 0.00020000 BTC!!?! That's like ~US$10 (even with the dump in BTC price just now)...
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