When first installed, QuicKey asks for these permissions:

➤ "Read and modify your browsing history on all your signed-in devices"

QuicKey uses this permission to let you search the titles and URLs of
the open tabs, as well as pages from your history. The "all your
signed-in devices" part is there only so that recently closed tabs can be
restored with their full history. The only time QuicKey changes your
browsing history is when you choose to delete a history item.

➤ "Read and change your favorites"

QuicKey uses this permission to let you search the titles and URLs of
pages in your favorites. The only time it changes your favorites is
when you choose to delete one.

QuicKey can't access or manipulate the content of any pages you visit and doesn't transmit any information other than some anonymized diagnostic data.