Building an API based quick report service (around Typeform, Zapier, Mailgun, and R-Project's Plumber service) for my professional and academic businesses focus

Building an API based quick report service (around Typeform, Zapier, Mailgun, and R-Project's Plumber service) for my professional and academic businesses focused on essay editing and resume writing. People don't have the time or inclination to do final edit themselves so these tools will tell them how bad their doc is and whether they need a professional service like ours. Will mostly be for Asian clients who find me on China's Taobao and Weidian where we have our electronic shops.