Click the button: a Claude tab opens. Approve, copy the code Claude shows, come back and paste it.
Click the button and log in. You will end on a "site can't be reached" localhost page: that is expected. Copy the FULL address from that tab's URL bar and paste it below.
Click the button, log in with Google, and it shows you a code. Copy it and paste it below.
Tokens stay in this browser (localStorage), transit only through this site's functions to the provider, and refresh automatically.
Paste a SKILL.md below, click "Test skill", try it in the chat, then export the tool as an HTML file. Send the exported file to Emeric: tools only run once published on this site (the site handles the Claude login and the searches).