Great- thank you!  Now I am trying to use that in a middle of an einsteni bot dialogue. It doesn't seem to be working-- any idea why? here is my code, which I am invoking from my einstein bot dialogue:

public with sharing class BotUrlClass {
public class TranscriptInput {
    @InvocableVariable(required=true)
    public ID routableID;
  }
  
  public class VisitorUrlOutput {
    @InvocableVariable(required=true)
    public String urlOfMostRecentPage;
      
  }
 
  @InvocableMethod(label='Get User URL')
  public static List<VisitorUrlOutput> getUrlName(List<TranscriptInput> transcripts) {
 
    List<VisitorUrlOutput> urls = new List<VisitorUrlOutput>();
  
    for (TranscriptInput transcript : transcripts) {
    
      // Query for the transcript record based on the ID
      LiveChatTranscript transcriptRecord = [SELECT Name, URL__c
                                             FROM LiveChatTranscript 
                                             WHERE Id = :transcript.routableID 
                                             LIMIT 1];
        
        string headerdata2= ApexPages.currentPage().getHeaders().get('Host');
        string urlvalue2=Apexpages.currentPage().getUrl();
        string url2='https://' + headerdata2+ urlvalue2;  
        
      
      // Store the url in an output variable
      VisitorUrlOutput urlData = new VisitorUrlOutput();
      urlData.urlOfMostRecentPage = url2;
      
      // Add the url to the list of outputs
      urls.add(urlData);
    }
    
    return urls;
  }
}