This is a bash script that only requires a single command in Terminal and a single swipe on your iPhone to make a phone call. It is an adaptation of my command line Pushover script, so please review that before proceeding below.
Create a file called callhome at /usr/local/bin with the following contents:
#! /bin/bash message="tel:8005551212" action="Call Home" url_title="Make the Call" curl -s \ -F "token=$APP_TOKEN" \ -F "user=$USER_KEY" \ -F "title=$action" \ -F "message=$message" \ -F "url_title=$url_title" \ -F "url=tel:8005551212" \ https://api.pushover.net/1/messages.json
Replace the two instances of
8005551212 with a phone number, and $APP_TOKEN and $USER_KEY with your app token and user key.
Make the script executable:
chmod +x callhome.
Now all you have to do is type
callhome from the command line. When you get a notification on your iPhone, swipe it. Pushover will open the supplementary URL, which will dial the number.