Organisation for Economic Co-operation and Development
A club of 38 mostly rich economies whose statistics arm publishes the composite leading indicators used in every region here.
The OECD collects and harmonises economic statistics from its members and several large non-members, including China and India. Its main economic indicators are published through an SDMX API under a CC BY 4.0 licence.
worldstat.us uses the OECD composite leading indicator for all six regions and the OECD's consumer price series for China and India, where the national publishers offer no machine-readable feed.