The openCDE initiative is a portfolio of API standards.
The foundation API can be found here: https://github.com/buildingSMART/foundation-API
On top of the Foundation API there are feature based additions:
- BIM Collaboration Format (BCF) API: https://github.com/buildingSMART/bcf-API
- Documents API: https://github.com/buildingSMART/documents-API
- Dictionary API (also implemented by the buildingSMART Data Dictionary): https://app.swaggerhub.com/apis/buildingSMART/Dictionaries/v1 More API projects will follow later.
Please see the buildingSMART Technical roadmap for further reference: https://www.buildingsmart.org/about/technical-roadmap/