This page previews the kind of fields FastOpenData returns per address, drawn from datasets that have real ingestion code in the repo. An address lookup returns 881 columns today, but this list is not generated from them: it is hand-written, and there is no endpoint that reports the real schema. Treat it as illustrative, and the demo as authoritative.
Showing 42 of — draft fields. There is no /fields endpoint yet — this list is illustrative, not a live schema.
FastOpenData