Is it possible to create a license based on 0BSD + extra development duties?

Hello everyone,

I have a question about license structure and compatibility with the Open Source Definition (OSD). I am exploring the idea of creating a new open-source license that uses 0BSD as the legal base and adds extra development duties (for example, documentation, testing, traceability, or similar project-structure requirements). These duties would apply only to contributors and maintainers, not to end users, and they would not restrict how the software can be used, modified, or redistributed.

My question is:

Is it possible for a license built on 0BSD + additional development duties to remain compatible with the Open Source Definition?

I am not asking for approval at this stage, only for general guidance on whether this type of structure is acceptable within OSI’s understanding of open-source licensing.

Thank you for your time and any comments you can provide.

Akhil Chandran