は用意できた

have it ready

→ は
phrase Rare #36,605
have it ready Used to say that something was successfully prepared or obtained. The は marks what was prepared, and the phrase can also be used as a question: “Did you get it ready?”
JA: 必要な書類は用意できた。
EN: I have the necessary documents ready.

ケーキは用意できた

Were you able to get the cake ready?

パスポートは用意できた

I've got my passport ready.

— Брат 2 (2000)

武器は用意できた

I’ve got the weapons ready.

— RRR (2022)

は用意できた

Were you able to get the money ready?

— イップ・マン 序章 (2008)