'How do the keys work with reCAPTCHA v3 Enterprise?

I'm trying to include reCAPTCHA in a React application I'm developing, with Next.js for the server side functionality.

I think I'm fundamentally confused by reCAPTCHA Enterprise.

The former "free" way to register a domain with reCAPTCHA was such that users were given a public reCAPTCHA key, and a private reCAPTCHA key for the backend. That's from using Google's reCAPTCHA v3 as registered via "Admin" at https://www.google.com/recaptcha/admin/create.

Given I have a GCP account, I'm redirected to the reCAPTCHA Enterprise API. Here there is only one key available. Is there no secret key for use in reCAPTCHA Enterprise?

If so, how does one use this? Is there no private key anymore?



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