Update: toui is now in ChatGPT's plugin directory
toui now has its own page in ChatGPT’s plugin directory, under the name toui URL Shortener.
Connecting no longer starts with pasting a URL. In ChatGPT, open Plugins in the sidebar and search for toui, then click Install plugin and sign in with your toui account. You can also open the toui plugin page directly.
Step-by-step setup for both ChatGPT and Claude is in the setup guide.