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TESTING

Discovery

Open Data Hub Discovery is a web tool for exploring and understanding the datasets in the Open Data Hub before you query them. It automatically discovers datasets from the Metadata API, infers their schema, and computes field-level statistics, so you can find the right dataset and the right fields without writing any code.

It is the natural first step of a typical workflow: discover a dataset here, inspect it in the Data Browser or Analytics, then read it through the Content API or Time Series API.

1. What you can do​

  • Search datasets by keyword, tag, or domain (Mobility, Tourism).
  • Inspect a dataset's schema: the full list of fields with their paths and types.
  • Read field-level statistics: how often a field is populated (null percentage), how many distinct values it has, and its most common values, so you can tell whether a field is actually usable before building a request.
  • Browse tags used across datasets to understand how content is classified.

2. AI chatbot assistant​

Discovery includes an AI chatbot assistant that lets you explore datasets in natural language: ask which datasets exist, what fields they expose, or which values a field contains, and it answers using the Discovery data directly.

info

Access to the chatbot can be arranged on request. Contact the Open Data Hub team at help@opendatahub.com to enable it for your use.

3. From discovery to a request​

Once you have found a dataset and the fields you need, read it through the APIs:

Each API also offers an interactive Swagger UI for trying requests directly in the browser.