The name finder works fully offline without this — the built-in generator needs no key and costs nothing. Adding your own API key gets you a second, usually more imaginative set of suggestions alongside it.
Your key is stored in this browser only and the request goes straight from your browser to Anthropic. It is never sent to our server and never appears in our logs. Usage is billed to your own account, so use a key with a spending limit set.
Create a key at console.anthropic.com. Starts with sk-ant-.