Hello, following the practices use on: https://developer.apple.com/documentation/appstoreconnectapi/generating_tokens_for_api_requests I used Python, and uses pyjwt and request library in attempt of making requests I created my jwt header and payload like this jwt_header = { "alg": "ES256", "kid": MY_KEY_ID, "typ": "JWT" } jwt_payload = { "iss": MY_ISSUER_NUMBER, "iat": time_now, "exp": time_10_min, "aud": "appstoreconnect-v1" } and jwt can encode successfully without error jwt_token = jwt.encode(jwt_payload, MY_SECRET_KEY, algorithm="ES256", headers= jwt_header) but really when I try to make a get request with get_app_id_endpoint = "https://api.appstoreconnect.apple.com/v1/apps" headers = { 'Authorization': f'Bearer {jwt_token}', 'Content-Type': 'application/json' } response = requests.get(get_app_id_endpoint, headers=headers) it always gets a 401 response. Is there anything that need to be changed here? I have tried sosme of the solutions found online such as take out "alg" field in jwt_header take out "iat" field in jwt_payload cast time_now and time_10_min (UNIX epoch time) to integer take out Content-Type filed in headers but issue remains, what could I possible do here to get over it?