I have a dedicated 20 amp circuit in my kitchen meant for a dishwasher.

Can I run an electrical outlet off that same circuit? I live in Mass if that makes a difference in regards to code?

Ideally i would like to run an AC unit in the summer off that outlet but I can understand if this is not feasible.

Would it be better to jump off a counter top GFI to create the new outlet?

Any advice is greatly appreciated.