Connection to the App Store Connect API using Python3

App-Store-Connect-API-Python.md

How to connect to the App Store Connect API using Python3

You will need the requests and authlib packages. Just run :

$ pip install requests authlib

Then you need to generate an API Key from the App Store Connect portal (https://developer.apple.com/documentation/appstoreconnectapi/creating_api_keys_for_app_store_connect_api).

In the Python code below, replace the values of KEY_ID, ISSUER_ID and PATH_TO_KEY with your own.

You can change the URL of the request you want to make with the URL variable.

Finally, if you have some query parameters to pass in, use the params parameter of requests.get() (or requests.post()).

appstoreconnect-api.py

import requests, time, json
from authlib.jose import jwt

KEY_ID = "XXXXXXXXXX"
ISSUER_ID = "XXXXXX-XXXXXXX-XXXXXX-XXXXXXX"
EXPIRATION_TIME = int(round(time.time() + (20.0 * 60.0))) # 20 minutes timestamp
PATH_TO_KEY = 'path/to/your/key.p8'
with open(PATH_TO_KEY, 'r') as f:
    PRIVATE_KEY = f.read()

header = {
    "alg": "ES256",
    "kid": KEY_ID,
    "typ": "JWT"
}

payload = {
    "iss": ISSUER_ID,
    "exp": EXPIRATION_TIME,
    "aud": "appstoreconnect-v1"
}

# Create the JWT
token = jwt.encode(header, payload, PRIVATE_KEY)

# API Request
JWT = 'Bearer ' + token.decode()
URL = 'https://api.appstoreconnect.apple.com/v1/users'
HEAD = {'Authorization': JWT}

r = requests.get(URL, params={'limit': 200}, headers=HEAD)

# Write the response in a pretty printed JSON file
with open('output.json', 'w') as out:
    out.write(json.dumps(r.json(), indent=4))

Thank you for posting the solution. It is a pain in the ass to figure it out in the labyrinth that Apple calls document.