Check that ngrok is running. If not, try to restart. Return tunnel urls.

check_ngrok.sh

#!/bin/bash

resp=$(curl -sS http://127.0.0.1:4040/api/tunnels || echo 0)
if [[ $resp == "0" ]]; then
    echo "Restarting service" >&2
    pkill ngrok
    screen -dmS ngrok /home/human/ngrok start --all
    sleep 90
    resp=$(curl -sS http://127.0.0.1:4040/api/tunnels)
fi
tunnel=$(jq '.tunnels[].public_url' <<< "$resp")
if [[ "$tunnel" == "null" ]]; then
    echo "nil"
else
    echo $tunnel
fi

@romech Client who invited you over must get $500