GenerateMockDataPreviewResponse

Dry-run preview of generated sample rows — nothing is written.

seedSeed (integer)required

Seed used; echo back on the write to reproduce the preview.

countCount (integer)required

Total rows that will be generated on save.

columnsstring[]required

Column names in schema order.

rowsobject[]required

First N generated rows, JSON-safe.

GenerateMockDataPreviewResponse

{
  "seed": 0,
  "count": 0,
  "columns": [
    "string"
  ],
  "rows": [
    {}
  ]
}