inspirehep.net vs World Bank

INSPIRE-HEP is the high-energy physics community's literature database, covering papers, authors, institutions, and citation graphs going back decades. Its REST API returns JSON records for literature, author, and conference searches and is fully keyless, with no registration or rate-limit tier to opt into.

The World Bank's Indicators API gives free, keyless REST access to the World Development Indicators dataset — thousands of economic, social, and environmental indicators across nearly 300 countries and regions, spanning six decades. Responses are paginated JSON or XML, covering countries, regions, income levels, lending types, topics, sources, and the indicator series themselves.