All I want for this Christmass is an authoritative list of all US federal agencies. I kid you not, there is no such list and the number of federal agencies is uncertain. From Wikipedia: >Legislative definitions of a federal agency are varied, and even contradictory, and the official United States Government Manual offers no definition. While the Administrative Procedure Act definition of "agency" applies to most exec…
It’s not quite an official list due to the issue you mentioned but anything that realistically rounds up to an “agency” will publish notices or regulations in the federal register, and the fedreg API has an endpoint to get all agencies.
That's a really clever idea!