Hi @pixelplay99, thanks for your question.
Each new free site requires its own API key upon installation, but you can get as many free keys sent to the same email address as you’d like. There’s no limit and no plan to add any kind of limit to the number of free sites a single email address can configure.
With fresh installations, our installation guide with a step-by-step video should assist you on obtaining a free key: https://www.wordfence.com/help/api-key/#installing-your-free-license-key
For a situation such as yours with multiple sites to manage, any existing sites you’ve had for a while will have a free API key that Wordfence automatically fetched when you installed it, which will remain valid. You could also set up Wordfence Central for free so you can manage security across all sites you’re responsible for in one dashboard. That’s just optional, but thought I’d mention it.
Many thanks,
Peter.
