[pc86]

E-File is a thing but I'm not sure how open the API is. This app specifically just generates a PDF.

[smilebot]

From their website: You need to be an authorized e-file provider (1). I'm guessing that if you're approved, you'll get access to their API. And you'll show up in their list (2)

1: https://www.irs.gov/e-file-providers/become-an-authorized-e-... 2: https://www.irs.gov/filing/e-file-options