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Examples you can reproduce, down to the seed.

Download the data, inspect the exact rules, and verify the output yourself. Worked examples now include specifications, seeds and file checksums.

ecommerce-test-dataseed 991
data.csv
data.jsonl
spec.json
manifest.json

The output. The rules. The seed.

The worked-example library now includes generated CSV and JSONL files, the exact Ground specification, a seed and a manifest with SHA-256 checksums. You can inspect every file without creating an account.

Each example explains its schema, reports the counts actually generated and includes a workflow you can follow. A small Python verification script checks the downloads using only the standard library. Keep the downloaded fixture when you need exact historical output: future engine versions can change generated values.

  • Measured output. Inspect observed status frequencies, missing values and rare-label counts rather than relying on probability settings alone.

  • An inspectable recipe. Save the specification and seed with your fixture. Recreate a dataset through the API using the documented request.

  • Clear limits. Each example states what it models and what it leaves out, so a designed simulation is not mistaken for validated real-world behavior.