Tools you can try in your browser.

Add bad, repeated, or fast updates to a browser simulation. See whether any records are lost or handled twice, including while old data is rebuilt.

Add a CSV, JSON, or Parquet file to inspect its columns and check for personal information. You can also use SQL, a language for asking structured questions of data, and export a safer copy. Nothing is uploaded.

Add a CSV or TSV file to count missing values, distinct values, and repeated rows. The checking engine uses WebAssembly, which lets compiled code run quickly in your browser.

Explore Great Britain's public list of transport stops. Filter the full dataset to find records with missing locations, old updates, or inactive status.

Paste a list to group entries with similar meaning and flag unusual ones. An embedding turns each value into numbers that can be compared, and it runs on your device.

Try seven small checks for changes in structure, unclear labels, personal information, and model results. Each check runs in the browser.

Explore transport stops as a 3D knowledge graph, a map that stores facts and the relationships between them. Search, move around, or select an item.

Change how two stop types are related and see why an AI search uses different facts. The data stays the same; only the route through the linked facts changes.

Propose a fact and check it against a small set of rules. The tool accepts facts that fit, rejects contradictions, and explains why.

Open apps inside a 3D phone to inspect generated data, ask questions, search by meaning, and view linked facts. The tools run in the browser.

Ask questions about sample data with a small language model, software that produces text from a prompt. It runs in your browser and does not upload the data.

Ask questions about the published work on this site. The answer is built from the site's own pages in your browser, and every claim links to its source.

Check whether an AI agent tool description is clear and complete. Preview how the tool will appear and see an example request.

See current status for Underground, Overground, Elizabeth line, DLR, and tram services. This tool connects to TfL's public service for live updates.