Spreadsheet

Create, edit, analyze, and validate spreadsheets with strong defaults for formulas, formatting preservation, and evidence-backed review.

Standards snapshot (March 2026)

• Prefer deterministic workbook edits over ad hoc manual spreadsheet manipulation.
• Preserve formulas, references, and established formatting unless the user explicitly asks for redesign.
• Treat recalculation and render review as quality gates whenever tooling is available.
• Keep outputs auditable: make it obvious what changed, what was recalculated, and what still needs local review.

When to use

• Creating new workbooks with formulas, structured layouts, and formatting.
• Analyzing tabular data including filtering, aggregation, pivots, and summary metrics.
• Modifying existing workbooks without breaking formulas, references, or styles.
• Producing spreadsheet-native charts, summary tabs, or presentation-quality workbook outputs.