As of version 1.1, WORM has two methods of exporting mesh data

Executing worm export_mesh will export the navigation mesh into the JSON format with the following structure:

[{ 
  id: integer,
  geometry: [[x, y, z]],
  connections: [{ id: integer, boundary: [[x, y, z]], entry: [[x, y, z]], vis: boolean, drop: boolean}]
}]

Note that entry will not be present if vis is false.

Executing worm export_raw_polys will export the mesh itself, without the navigation information. It will have each polygon's vertices within brackets in a text file.