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Retrieve column-level metrics—min/max values, null counts, cardinality buckets—to guide query writers and UI filters.
Table metadata endpoints are rate limited to 60 requests per minute per API key.
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namespace
string
required
Data source namespace to inspect (for example polymarket or kalshi).
​
table
string
required
Table name within the namespace (such as events, markets, or events_latest).

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Example Response

{
  "namespace": "polymarket",
  "table": "events",
  "column_stats": [
    {
      "column": "yes_probability",
      "data_type": "Float64",
      "row_count": 8456782,
      "null_count": 0,
      "min_value": 0.001,
      "max_value": 0.999,
      "avg_value": 0.512,
      "distinct_count": 458234,
      "cardinality": "high"
    },
    {
      "column": "volume_24hr",
      "data_type": "Float64",
      "row_count": 8456782,
      "null_count": 23456,
      "min_value": 0,
      "max_value": 15678901.23,
      "avg_value": 23456.78,
      "distinct_count": 234567,
      "cardinality": "high"
    }
  ]
}
Tremor samples the first 20 columns to keep statistics responsive. If you need deeper profiling, run aggregate queries through POST /api/query.