KeyPatternsQ

KeyPatternsQ[data,patterns]⟹result

does a key-wise MatchQ comparison of the keys in data with the patterns specified by the keys in patterns.

Details

When Verbose->True, the output is an Association with the results of each of the comparisons.
You can check if something is missing with the form <|key->_Missing|>

Check values of first param match the patterns in the second param:

Only checks the values passed into the second Association:

Fails if key in first Association is Missing:

Can check is something is not there by checking the _Missing pattern:

Works on lists of rules:

Works checking a single key with a Rule for the second param:

Verbose->True returns an Assocation with details on what's wrong:

Verbose->True returns all True assocation: