xlsx
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas
83
80%
Does it follow best practices?
Impact
80%
1.56xAverage score across 3 eval scenarios
Passed
No findings from the security scan
Fix and improve this skill with Tessl
tessl review fix ./skills/data/06-office-excel/SKILL.mdEvaluation results
77%
10%M&A Deal Tracker: Update Template with New Transaction Data
Template preservation and library selection
load_workbook without data_only
100%
100%
Formulas preserved in output
100%
100%
Existing formatting retained
100%
100%
Green text for cross-sheet links
0%
100%
Cross-sheet reference syntax
100%
100%
Pandas for analysis
0%
0%
Multiples formatted as 0.0x
100%
100%
Zero formula errors
100%
100%
Cell documentation
0%
0%
recalc.py called
0%
0%
72%
32%Quarterly Sales Performance Report
Excel formula usage and documentation
Pandas for reading data
0%
100%
openpyxl for output formatting
100%
100%
Excel formulas for calculations
0%
100%
recalc.py invoked
0%
0%
Source documentation format
50%
100%
Column header units
100%
100%
Cell documentation in Excel
0%
50%
Minimal Python code
25%
25%
No print statements
0%
0%
Zero formula errors
100%
100%
No verbose variable names
100%
100%
92%
44%SaaS Startup P&L Projection Model
Financial model color coding and number formatting
Blue input cells
0%
100%
Black formula cells
0%
100%
Yellow assumption background
0%
0%
Years as text
100%
100%
Currency format string
100%
100%
Units in column headers
0%
100%
Zeros displayed as dash
0%
100%
Percentages one decimal
50%
100%
Negatives in parentheses
0%
100%
Assumptions in separate cells
100%
100%
Excel formulas not Python values
100%
100%
Zero formula errors
100%
100%
- Repository
- majiayu000/claude-skill-registry
- Commit
a16e8e7
- Evaluated
- Agent
- Claude Code
- Model
- Claude Sonnet 4.6
Table of Contents
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