Spreadsheet Formula Evidence Audit

What it does

Inspect XLSX formula cells, cached error values and external-link parts without modifying or recalculating the workbook.

How to use it

Give the assistant the concrete task and required inputs. This fictional request illustrates the contract; use your selected files and parameters for real work.

{
  "file": "samples/book.xlsx"
}

Output and verification

Creates a JSON report and, when applicable, CSV, Markdown or document artifacts in the current workspace. Inputs remain intact. Five offline tests cover the example, invalid input, actual CLI output, path boundaries and non-overwrite behavior. Live account, browser and visual results require separate verification.

Scope

Missing caches do not prove formulas are wrong; stale caches can be misleading. Use Excel or a compatible calculation engine for real recalculation, then inspect results. No macros or links are executed.