You mean like this one? https://steemit.com/utopian-io/@r351574nc3/new-project-steemit-exif-microservice

let a user input their steemit name

Check (not just a name, but directed content by permlink)

present them with pre-formatted exif data which they can link to or include in their posts.

Check (preformatted JSON, that they can then refine and prune for whatever data they want)