The I/O model builder is an open source Python library for creating environmentally extended input-output models (EEIO models) from CSV files in a simple data format. It includes functions to calculate different result types (e.g. life cycle assessment results, direct and upstream contributions, etc.) from such models and convert them into JSON-LD data packages that can be imported into openLCA.
The model builder and more information about installation and usage are now available on Github: https://github.com/USEPA/IO-Model-Builder