Currently, it is impossible to include a collection item's _id, _cid, or default_sku (in the case of ecommerce products) from within Webflow's Designer view. It would be incredibly useful to access them without the help of third-party tooling, since they are currently the most reliable (and only truly immutable) way to reference an item or product. For us, this would be useful in handing off product IDs to other services that need to index our products, rather than relying on slugs.