For the impatient: Just head over to the Online Grasshop Escapement Builder page.
This open source Grasshopper Escapement Builder is based on the description published by Guy D. Aydlett: The Anatomy Of The Grasshopper (the pdf file has been shared by jrbeal on his clock forum). I am aware of shared spreadsheets that implement the equations but as far as I know this is the first online tool that generates Grasshopper escapement drawings.
Here are two sample outputs showing the exit pallet facing left (first drawing) and right (second drawing) based on different values for the pallet span N (5 and 9 for the left and right drawing, respectively).
I am very happy that Claire Huang allowed me to feature her 3d printed escapement which is based on my online escapement builder: