The SiteManager Product Uploader has an import/export API that makes it easier to interact with products programmatically. The APIs use a REST-like structure, and the products follow the CSV Fields format set forth in the above page.
Import / Export Documentation
Authentication
The import/export APIs follow the SiteManager standard authentication format with a query string called authKey.
?authKey={AUTHKEY}
If you need an Authorization Key, please contact your Punchmark account manager.