Israel has one of the stricter policies including "vaccination passports" that require a booster to be valid and must be presented at social gatherings like restaurants. International travelers to Israel must provide proof of full vaccination prior to being admitted.

For a while they allowed testing negative or recovery from a prior infection to count for the green pass. Did they change that?

Foreign travelers are currently banned altogether, but you are correct that a antibodies test was also accepted prior to the current ban.