The OpenAIRE+ HTTP API allows developers to access the metadata information space of OpenAIRE+ by performing queries over publications, datasets, and projects. The API is intended for metadata discovery and exploration only, that is it does not give direct access to publication files and it does not provide access to the whole information space: the number of total results returned by one query is limited to 10,000. For accessing the whole information space, developers are encouraged to use the