Apple have published docs on this topic now and also modified the API so that now your JWT subject has to be sub and not subject as I was able to get away with in my first code example.

SUCCESS! Had a labs call with two Apple engineers and they set me on the right path. This is what your JWT should look like: var privateKey = fs.readFileSync("YOU KEY FILE FROM DEVELOPER CENTER.p8"); var token = jwt.sign( { subject: "APP ID", }, privateKey, { jwtid: "YOUR TEAM ID.YOUR APP ID", issuer: "TEAM ID", expiresIn: "1h", keyid: "KEY ID", algorithm: "ES256", header: { id: "YOUR TEAM ID.YOUR APP ID", }, } ); // id is teamid.serviceid const url = "https://weatherkit.apple.com/api/v1/weather/en/51.677612/-2.937941?dataSets=currentWeather&timezone=Europe/London"; const config = { headers: { Authorization: `Bearer ${token}` }, }; const { data: weatherData } = await axios.get(url, config); Getting the id on the header is the trick. I have made a YouTube video and example app but it won't let me post the link, the youtube video id is: 7mg42_Fix9k

Looks like there is a url issue? If I use the urls in the docs: https://weatherkit.apple.com/api/v1/weather/en then I get a 500. If I use the url as in the video https://weatherkit.apple.com/1/weather/ then I get a 401

Anyone get this working yet? I'm getting a 500 with a node app