Hi @daknow, you mean public as in letting your own customer connect their Notion account to your n8n instance?
I am afraid that while this has come up a couple of time for various services, it is unfortunately not an option n8n currently offers outside of it’s own UI. So if you want 3rd parties to avail of your workflows you would have to create n8n accounts for them and have them authenticate through the n8n UI.