Python Requests:

 
import requests
url = "http://pci01.picalike.corpex-kunden.de:8090/update_styles_cache"
params = {"shop_apikey" : <customer_api_key>}
resp = requests.post(url, json=params)
resp.text

Should result in a 200 “OK” HTTP Status Code. In Case you are seeing another message, please double check you have the correct apikey and there is not typo in your code.