Get ngrok URL from command line

ngrok_url.sh

# ngrok should be running
# replace http with https at the end if needed
# based on: https://gist.github.com/rjz/af40158c529d7c407420fc0de490758b

echo $(curl -s localhost:4040/inspect/http | grep -oP 'window.common[^;]+' | sed 's/^[^\(]*("//' | sed 's/")\s*$//' | sed 's/\\"/"/g') | jq -r ".Session.Tunnels | values | map(.URL) | .[]" | grep "^http:"

doesn't seem to work with tcp tunnels

i think you need to remove "http:" at the end with "tcp:"

doesn't seem to work with tcp tunnels

An alternative is to use the ngrok api. see: ngrok agent api - tunnel detail

Pipe the output to jq to extract the appropriate value. e.g. to extract the public_url of my https tunnel I run:

curl -s http://localhost:4040/api/tunnels | jq ".tunnels[0].public_url"