How to figure out what metrics I can monitor while setting Keras Callbacks?

I am trying to figure out whether I have a host of metrics available to monitor out of the box while writing callbacks such as

ModelCheckpoint(monitor='val_loss')

or 

ModelCheckpoint(monitor='val_accuracy')

or whether the metrics i can monitor only depend on what i initialize in the compile method,

model.compile(metrics=['val_accuracy', 'val_loss'])

vs

model.compile(metrics=['val_loss'])

or 

model.compile(metrics=['loss'])

Question: Does initializing the callback come with a host of metrics i can monitor out of the box or do I have to manually set the metrics in the model compilation step, which constrains me to only those that I wrote?

Side Question: How can I find out the whole host of metrics I can type in whether it is in the compile method or not.. because I can’t seem to find a source that tells me.