Yummly Metadata API (Historical)
DEPRECATED / HISTORICAL. The Metadata endpoints (GET http://api.yummly.com/v1/api/metadata/{key}) returned the controlled vocabularies used to build search filters - keys included ingredient, allergy, diet, cuisine, course, holiday, technique, source, brand, and restriction. Used to populate valid facet values for the Search Recipes endpoint. No longer available; endpoints modeled from historical documentation and community client libraries.