Groovy

"http://httpbin.org/get".toURL().text

{
  "args": {},
  "headers": {
    "Accept": "text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2",
    "Host": "httpbin.org",
    "User-Agent": "Java/17.0.1",
    "X-Amzn-Trace-Id": "Root=1-618bf6df-6dbbe58a1b91dd340d09620c"
  },
  "origin": "67.23.104.250",
  "url": "http://httpbin.org/get"
}

With http-builder:

TODO: Doesn't work in org-babel with an import. Fix that? Do imports work in python blocks?

import groovyx.net.http.RESTClient

@Grab('org.codehaus.groovy.modules.http-builder:http-builder:0.7.1')

String baseURL = 'http://httpbin.org/get'
def restClient = new RESTClient(baseURL)
restClient.get('/get')