Tableau Web Data Connector for OECD databases which come with SDMX-JSON API support
Here are the demos:
Dataset: Greenhouse gas emissions by source
This dataset on air and climate presents trends in man-made emissions of major greenhouse gases and total emissions by gas and by source.
Use link https://blog.anyan.me/wdc-oecd-sdmx-json/AIR_GHG.html to fetch this data source in Tableau