arcsecond.io vs World Bank

Arcsecond.io is the cloud API behind Arcsecond.local, a multi-user platform observatories run to manage telescopes, night logs, and data packages, but it still exposes the project's original public astronomy-lookup endpoints for object coordinates and exoplanets. Those endpoints are keyless and return live-synced records — /exoplanets/ pulls current rows from the NASA Exoplanet Archive. Paid tiers apply only to running a private observatory instance; the public data-lookup endpoints stay free.

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.