@Miriam I created a subpage for work on the API. I plan to publish my research work on this page, but we can use it for other design documentation/project tracking too. We can also move the page or change the name if you don't like it.

Just a note that I move the design research project plan to a different subpage, for clarity: https://meta.wikimedia.org/wiki/Research:Identification_of_Unsourced_Statements/API_design_research

@Aklapper I'd like to still keep the "Research" tag/project on these tasks as it works better with our current workflows. (we only check one board for our day-to-day work and that's Research and it's good to not lose tasks from it.) Sorry for reverting your change on this one and a few other tasks in advance.

The output of the first stage of this research, as well as the opportunities arisen for collaborations and internships, led to the decision of having an intermediate step for this task.
In collaboration with @AikoChou, an Outreachy intern, we will have a system that can release periodic data dumps exposing sentences in Wikipedia needing citations. This task is tracked at: T233707.