xlsx
Create, read, edit, and fix Excel/CSV spreadsheets with formulas, charts, and financial formatting.
🛡️ AgentReady threat assessment
MAESTRO 7-layer threat model + OWASP AIVSS risk score for xlsx, derived from its capabilities.
AIVSS 6.8 · Medium
View MAESTRO 7-layer threat model →Overview
Anthropic's official spreadsheet skill for .xlsx/.xlsm/.csv/.tsv tasks. Enforces zero-formula-error output, industry-standard financial color coding, and number formatting, using openpyxl and bundled helpers to add columns, compute formulas, build charts, clean messy tabular data, and convert formats. Reads and writes spreadsheet files and can run recalculation tooling.
Key features
- Formula computation with zero-error guarantee
- Financial-model color coding and number formatting
- Chart creation and messy-data cleaning
Use cases
- Build a financial model with formulas and charts
- Clean a malformed CSV into a formatted spreadsheet