We are adding the Free Application for Federal Student Aid (FAFSA) API swagger definition to the API Commons today.
The FAFSA API is a working project to show the Department of Education what is possible when you turn a form into an API, with a goal of stimulating development of custom PDF implementations, as well as web and mobile application tools that use the API.
The FAFSA API is not an official federal government project, but reflects a public / private sector partnership, showing was is done with the private sector and government work together to design APIs and to develop open source tooling around these APIs.
You can participate in the FAFSA API development via the Github repository and supporting research Gitub page.