Unless otherwise stated by the user or existing template
SkillScore88Maintained
Automatic
◆Finance & Accounting pack
Last verified 8/12/2026
What it changes
Passed 19 of 22 test cases with the skill, and 13 of 22 without it.
Without skill60%
With skill88%
Checks it passed that the model alone missed
The response selects pandas for bulk tabular data analysis tasks.
The response instructs preserving established file formatting patterns exactly.
The response specifies red text color (RGB: 255,0,0) for external workbook file links.
and 6 more in the full report
7 fixed15 passed either way3 still failing0 broke
Pass-rate lift
+28 pp
Tokens
+107%
Agent turns
0%
Response time
-29%
Model gemini-3.6-flashMeasured 8/12/2026v122 of 25 cases passed with skill · 22 comparable
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 7
Prompt
When a cell formula in an Excel model links directly to an external workbook file on disk, what text color is required by standard financial model presentation rules?
What was checked, without and with the skill
Checked
Without skill
With skill
The response specifies red text color (RGB: 255,0,0) for external workbook file links.
Missed
Passed
case-16 · gemini-3.6-flash · 8/12/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md291 linessingle file
Requirements for Outputs
All Excel files
Zero Formula Errors
Every Excel model MUST be delivered with ZERO formula errors (#REF!, #DIV/0!, #VALUE!, #N/A, #NAME?)
Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like "the xlsx in my