What does "Savvy?" mean in this case? Does it mean "Did I show knowledge and it makes sense?"

(Jack thinks something bad might happen to him during the treasure hunt so he talks to a clergyman who is also on the trip.)

Jack: On the off chance this does not go well for me, I would like it noted here and now that I am prepared to believe in whatever I must so that I may be welcomed into that place where all the goody goodies get to go. Savvy?
Clergyman: We have a word for that, Jack. You can convert.

Question

What does "Savvy?" mean in this case? Does it mean "Did I show knowledge and it makes sense?"

(Jack thinks something bad might happen to him during the treasure hunt so he talks to a clergyman who is also on the trip.)

Jack: On the off chance this does not go well for me, I would like it noted here and now that I am prepared to believe in whatever I must so that I may be welcomed into that place where all the goody goodies get to go. Savvy?
Clergyman: We have a word for that, Jack. You can convert.

Answer

"Savvy?" means "Do you understand?" or "Is that clear?"
In this case, it's almost like "Do we have a deal?"

'Savvy' is a slang word derived from the French 'savoir' which means 'to know'.

Savvy? = Do you understand? / Is it clear?
It can be answered, 'Savvy' = I understand / It's clear.
He's really savvy = He knows a lot (about something). The adjective is still quite often used in British English.