publicdataauby National Digital
This is an independent republication of open government data. No government agency is affiliated with it or has endorsed it. Every file names its publisher, its licence and the attribution the licence asks for.

For agents

Everything here is meant to be read by a program first. There are no keys, no accounts, no rate limits and no JavaScript needed for any data file.

Start with one of these

  • /llms.txt lists every dataset with its latest download URLs. /llms-full.txt adds the field list for each.
  • /.well-known/ard.json is the Agentic Resource Discovery manifest, with a display name and representative queries per dataset. The same document is at /.well-known/ai-catalog.json.
  • /catalog.json is a DCAT catalogue in JSON-LD, one record per live dataset with a distribution per format.
  • /openapi.json is an OpenAPI 3.1 document for every public path, with the dataset slugs as an enum. Load it into any client generator or an agent's tool list.
  • /backlog.json is every register entry with its status, licence and the reason if it is blocked. /api/votes has the current vote counts.

Every page has a Markdown twin

Add index.md to any page URL, or follow the rel="alternate" type="text/markdown" link in its head. The twin has the same facts as the page in plain Markdown with front matter.

Per dataset

  • /d/<slug>/datapackage.json is a Frictionless data package pointing at the latest version.
  • /d/<slug>/schema.json is a Table Schema. Types are string, integer, number, boolean, date and datetime.
  • /d/<slug>/versions.json lists every version with its date, row count, source hash and URL.
  • /d/<slug>/changes.json summarises each consecutive diff. /d/<slug>/diff/<a>..<b>.json compares any two versions by key.
  • /d/<slug>/latest/data.<format> redirects with a 302 to the newest dated version. Follow redirects.
  • /d/<slug>/v/<date>/data.<format> never changes and is cached for a year.
  • /d/<slug>/v/<date>/by/<field>/<value>.json is a smaller file for one value of a partition field. by/<field>/index.json lists them.

Inside every data file

JSON, NDJSON, GeoJSON, Parquet and SQLite each carry a publicdata header with the publisher, licence, attribution string, version, source URL and source SHA-256. Use the attribution string when you show the data to a person. The CSV has no room for a header, so read manifest.json beside it.

In the browser

Pages register WebMCP tools through document.modelContext when the browser exposes it: search_datasets, get_dataset, diff_versions and vote. Without it, the URLs above do the same work.

Robots

/robots.txt allows every crawler, including AI crawlers, everywhere except /api/. /sitemap.xml lists every page.