I think it will be helpful to have the Requestor information (UserName / Email), so it at least allows to know who is actually requesting for the API request. Optionally, the organisation he/she representing will also be helpful.
Do you want to approve/deny it straight away from the list, or have to click edit
Maybe it just me, i think i would prefer to have it approve straight away if sufficient information (who and why) is provided.
Should the request disappear once approved?
I think this could be archived or put in a request history page?