IDOL OnDemand by HP offers an array of data processing APIs for format conversion, image analysis, indexing, search, and textual analysis. Preview capabilities exist to view how many of these RESTful APIs behave in action. The Create Text Index API allows one to create an index with a unique name. Developers can then use this index to classify content using the Add To Text Index API. Indexes come in different formats called "flavors" which vary according to maximum number of documents, scaling performance, and number of field types.