I have made a simple REST API where user calls this URL:

www.example.com/wp-json/v1/getBook/123456?AuthorSurname=Buckley
 
 The response will return: {"Book":"Thank you for smoking"} in browser.

I would like to hide the response / replace it with another page whenever user keys in this URL.
The response can only be shown when it is triggered by CURL post.

How can I achieve this?

I have created this simple WordPress REST API where users can perform:

  Option A
• Types in the following URL in browser:
      → www.example.com/wp-json/v1/getBook/123456?AuthorSurname=Buckley
    The API will retrieve the relevant information and return a response in the browser:
      → {"Book":"Thank you for smoking"}

  Option B
• Perform a CURL statement in CMD or via scripting:
   (for Example)

function getBook($authorID, $authorSurname){  
    $ch = curl_init();
    $url = 'www.example.com/wp-json/v1/getBook/123456?AuthorSurname=Buckley';
    curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept:application/json','Content-Type:application/json'  ));
    curl_setopt($ch, CURLOPT_URL, $url.$authorID.'?AuthorSurname='.$authorSurname);
    curl_setopt($ch, CURLOPT_HEADER, 0);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    //execute the POST request
    $result = curl_exec($ch);       
    return $result;
    
    curl_close($ch);
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I would like to prevent the response from showing whenever user perform Option A.
  The response can only be shown via Option B.

How can I achieve this?

I have made a simple REST API where user call this URL:

www.example.com/wp-json/v1/getBook/123456?AuthorSurname=Buckley

The response will returned: {"Book":"Thank you for smoking"} in browser.

I would like to hide the response / replace it with another page whenever user keys in this URL.
The response can only be shown when it is triggered by CURL post.

How can I acheive this?

I have made a simple REST API where user calls this URL:

www.example.com/wp-json/v1/getBook/123456?AuthorSurname=Buckley

The response will return: {"Book":"Thank you for smoking"} in browser.

I would like to hide the response / replace it with another page whenever user keys in this URL.
The response can only be shown when it is triggered by CURL post.

How can I achieve this?