Enable Captcha Protection

Go to the hCaptcha website and sign up for an account. On the Welcome page, copy the Sitekey and Secret key.

If you have already signed up and didn't copy this information from the Welcome page, you can get the Secret key from the Settings page.

The Sitekey can be found in the Settings of the active site you created.

In the Settings page, look for the Sitekey section and copy the key.

Install @hcaptcha/react-hcaptcha in your project as a dependency.

Now import the HCaptcha component from the @hcaptcha/react-hcaptcha library.

Let's create a empty state to store our captchaToken

Now lets add the HCaptcha component to the JSX section of our code

We will pass it the sitekey we copied from the hCaptcha website as a property along with a onVerify property which takes a callback function. This callback function will have a token as one of its properties. Let's set the token in the state using setCaptchaToken

Now lets use the captcha token we receive in our Supabase signUp function.

We will also need to reset the captcha challenge after we have made a call to the function above.

Create a ref to use on our HCaptcha component.

Let's add a ref attribute on the HCaptcha component and assign the captcha constant to it.

Reset the captcha after the signUp function is called using the following code:

In order to test that this works locally we will need to use something like ngrok or add an entry to your hosts file. You can read more about this in the hCaptcha docs.