mws2spi.py

#!/usr/bin/env python
import os
from urllib.parse import urlencode
import requests
from nozzle.spapi.client import REGIONS, create_sigv4_session

NA_AUTH_URI = "https://api.amazon.com/auth/o2/token"
EU_AUTH_URI = "https://api.amazon.co.uk/auth/o2/token"
FE_AUTH_URI = "https://api.amazon.co.jp/auth/o2/token"

CLIENT_ID = ""
CLIENT_SECRET = ""

ACCESS_KEY = ""
SECRET_KEY = ""

DEVELOPER_ID = ""
SELLING_PARTNER_ID = ""
MWS_AUTH_TOKEN = ""

if __name__ == "__main__":
    # Get a Grantless access token
    params = {
        "grant_type": "client_credentials",
        "client_id": CLIENT_ID,
        "client_secret": CLIENT_SECRET,
        "scope": "sellingpartnerapi::notifications sellingpartnerapi::migration",
    }
    res = requests.post(NA_AUTH_URI, json=params)
    access_token = res.json().get("access_token")
    if not access_token:
        print(res.headers)
        print(res.text)
        quit()

    # Exchange MWS token
    sp_api_region = REGIONS["NA"].aws_region
    session = create_sigv4_session(
        access_key=ACCESS_KEY, secret_key=SECRET_KEY, spapi_region=sp_api_region
    )
    params = {
        "sellingPartnerId": SELLING_PARTNER_ID,
        "developerId": DEVELOPER_ID,
        "mwsAuthToken": MWS_AUTH_TOKEN,
    }
    response = session.request(
        "GET",
        f"https://sellingpartnerapi-na.amazon.com/authorization/v1/authorizationCode",
        headers={
            "x-amz-access-token": access_token,
        },
        params=params,
    )
    print(response.headers)
    print(response.text)