Auth0

// Auth0 Pre-user Registration Action
exports.onExecutePreUserRegistration = async (event, api) => {
  const email = event.user.email;

  try {
    const response = await fetch(
      `https://api.disposableguard.com/v1/check?email=${encodeURIComponent(email)}`,
      {
        headers: {
          Authorization: `Bearer ${event.secrets.DG_KEY}`,
        },
      }
    );

    if (response.ok) {
      const data = await response.json();
      if (data.is_disposable) {
        api.access.deny("Please use a real email address.");
      }
    }
  } catch {
    // fail-open
  }
};