Set up a basic web server in your preferred stack. Deploy it to any free hosting platform and expose an API endpoint that conforms to the criteria below:
Endpoint: [GET] <example.com>/api/hello?visitor_name="Mark" (where <example.com> is your server origin)
{
"client_ip": "127.0.0.1", // The IP address of the requester
"location": "New York" // The city of the requester
"greeting": "Hello, Mark!, the temperature is 11 degrees Celcius in New York"
}