I have looked at the other messages about Google Translate Enterprise API but none appear to provide syntax that works. My facts are these. I have a Google Enterprise account. I received a project id and an API-key. To test that and see if it worked, I used the python script shown on this page: https://cloud.google.com/docs/authentication/api-keys. That worked. Then, I authorized Google Translate API in my google cloud portal. I believe I authorized this API-Key to work with that API in the google enterprise portal associated with this project-id. I then looked for examples of how to actually contact that API, but struggled a lot. For example, I see this script here https://cloud.google.com/translate/docs/basic/detecting-language but this assumes you have already authenticated, and it refers you to a page about authentication that apparently works for some libraries but doesn’t work for Google Translate. So… then I looked for other sources and I found some examples where people tried just making http requests in this format: