API sending sms

Hi folks, so what I need to do is query a database for mobile numbers who birthdays are in a certain month (that’s the easy part, no problem there)
Here is the issue though, I need to send each number returned in the query to a post api to my sms provider to send a text message. So in there I need some form of repeat to each one. I have it working on a single record but when there is multiple records this is where it stops working.