@Sunaina Bidurga Shashikumar Thanks for reaching out.
Can you help us understand what is your end goal ?
If the particular API needs admin permission it lists them out while you are trying to Add the API option. You cannot work around it for that API.
Not all write API needs Admin permission though. We can help you further if you share more details.
Note : Any API which needs Admin consent, must have admin consent to work. There is no work around and avoiding this someway is more of a security risk.