Invoke Apigee Edge Mgmt API to list APIs, from elisp

try-request.el

(defun my-produce-basic-auth-header-value (username password)
  "produce an HTTP Basic Auth header value for a given username and password."
  (concat "Basic "
          (base64-encode-string
           (concat username ":" password))))

(request
 "https://api.enterprise.apigee.com/v1/o/deecee/apis"
 :headers `(("authorization" . ,(my-produce-basic-auth-header-value username password))
            ("accept" . "application/json"))
 :type "GET"
 :parser 'buffer-string
 :success (function* (lambda (&key data &allow-other-keys)
              (when data
                (with-current-buffer (get-buffer-create "*request demo*")
                  (erase-buffer)
                  (insert data)
                  (pop-to-buffer (current-buffer))))))
 :error (function* (lambda (&key error-thrown &allow-other-keys&rest _)
              (message "Got error: %S" error-thrown))))