Is there a way to submit IRS 1099 document(https://www.irs.gov/forms-pubs/about-form-1099-nec) programmatically? 1099 documents can be submitted through FIRE https://fire.irs.gov/, but it requires a manual process to upload the files. I'm wondering if there's a way to do it without using FIRE.
I know some companies provide API for submitting documents (e.g. https://docs.withabound.com/docs/1099-nec), and I would like to know how they are achieving that.