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Excel / Spreadsheet Skill

Official

by Anthropic

ExcelspreadsheetXLSXCSVfinancial modelingdata processingClaude Code

Official Anthropic skill that enables Claude to create, read, edit, fix, and convert Excel and spreadsheet files with professional formatting. Handles .xlsx, .xlsm, .csv, and .tsv formats with industry-standard financial modeling conventions.

Installation

claude skills add anthropics/skills/xlsx

Key Features

  • Create professional Excel files with industry-standard color coding and formatting
  • Read and analyze existing spreadsheets, identifying errors and inconsistencies
  • Build financial models with zero formula errors using Claude's formula construction guidelines
  • Convert between .xlsx, .xlsm, .csv, and .tsv formats automatically
  • Apply number formatting standards for currency, percentages, and financial multiples

Use Cases

  • Building financial models with correct DCF formulas, waterfall charts, and scenario analysis
  • Cleaning and normalizing messy CSV data exports from databases or SaaS tools
  • Converting Excel reports to CSV for downstream data pipelines
  • Auditing spreadsheets for broken formulas, circular references, or data inconsistencies
  • Creating structured data tables from unstructured documents or research notes

Related Resources

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