Yes, through feeds rather than the general API:

• Klaviyo catalog feed - the Catalog link on the Klaviyo card returns your active meals and packs (id, title, link, image, description, price) in Klaviyo's catalog format. It only works while the Klaviyo module is active, and the link is signed with a deploy-wide key rather than something unique to your kitchen.
• Facebook catalog - a CSV export of meals and packs (matching Facebook's product catalog columns) exists behind an internal cron-style endpoint; ask Sprwt support if you want it enabled for your account.
• Yelp reviews - the reverse direction: /api-data on your site calls the Yelp API using your saved Yelp keys and returns your latest reviews as JSON for the Yelp Reviews page module to display.

For anything else (menus, inventory) use the POS/cart API endpoints or ask support.