How to get your Shopify credentials

1. In Shopify Admin → Settings → Apps → Develop apps. Create a custom app and add these Admin API scopes:
   read_content, write_content, write_files, read_products, write_productsCopy
2. From the app's API credentials tab, copy the API key (Client ID) and API secret key (Client secret).
3. Fill in both fields on the next step and click Connect store. The access token will be generated automatically — no extra steps needed.