Ask questions about a CSV, TSV, or XLSX file in your browser. A local AI model proposes a constrained plan, you review it, and DuckDB performs the calculation deterministically without uploading your file.
The spreadsheet, question, analysis plan, and result remain in your browser. They are not sent to BaseToolbox analytics. Sessions use IndexedDB, source files use persistent browser file storage when available, and model weights are cached by version.
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The browser parses the selected file, identifies worksheets and column types, and shows a preview before analysis.
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The shared local model receives the table schema, not the full file, and proposes a constrained JSON plan using existing columns.
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After confirmation, local DuckDB runs the validated plan. You can inspect the evidence and export CSV, XLSX, or Markdown.