You can export whole projects as one-file markdown (or HTML, RTF), worst case being having to go through every project, exporting and splitting the file up (by

You can export whole projects as one-file markdown (or HTML, RTF), worst case being having to go through every project, exporting and splitting the file up (by a script), or turn the agenda folder somewhere in ~/Library (contains bunch of json) into something usable via script, but I agree, it lacks a reasonable solution for getting it all out at once.