ah, true. although you might get around that by uploading large images etc to something like cloudinary first, then only send the hosted asset URL to the endpoint. 🤔— Max Böck (@mxbck) October 7, 2019
Yeah there might be workarounds, and there is the idea of a micropub media endpoint for that sort of thing. But it doesn't feel as nice to have one part serverless and the other part not.