data.gov / One U.S. government dataset

Returns one dataset from the data.gov catalog by its slug or id (the slug from opendata.us.datasets.search, e.g. air-quality-maintenance-area-ozone): title, description, publisher, keywords, access level and the full DCAT record with every distribution (download and API links, formats) and the publisher's contact point. An unknown slug answers 404, a miss. Catalog metadata is U.S. government work; each dataset keeps the licence its publisher states (the record's dcat.license or rights).