
Data about various grocery products and foods.
Chomp API is a free Food & Drink API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
High-quality food data on hundreds of thousands of food products. Use our API to get nutrition labels, ingredients, diet labels, barcodes, and more for over 875,000 grocery products, branded foods, and raw ingredients.
Details from chompthis.com.

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Yes. The Chomp API is listed in the Food & Drink category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Chomp API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the Chomp API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Chomp API is served over HTTPS, so it's safe to use in production.