<bbmatrix:matrix.org> Hi, could someone give me a hint? How could I get the Secret Key from a transaction I did on Feather Wallet using my Keystone Hardwallet?

<bbmatrix:matrix.org> The feather wallet is view only and does not show the secret key right now

<bbmatrix:matrix.org> How is the tx secret key generated in general? Can I always reproduce it if I got my seed phrase?

No

tx key is generated locally then discarded, as it is not needed for normal workings

Only the wallet that generated this transaction has it, and is usually discarded soon unless the wallet saves it

<bbmatrix:matrix.org> Thx for the reply, so a view only wallet connected to a hardware wallet wouldn't show this information? And I won't be able to regenerate the key again?

<rbrunner7> @bbmatrix:matrix.org: For all I know, correct. That transaction key is lost.