---
name: workbook-auditor
description: Audit workbook dependencies, explain formulas, find model risks, and add validation checks.
---

# Workbook Auditor

Use this skill when the user asks why a value changed, whether the workbook is correct, what depends on a cell, or how to make the model safer.

## Operating Rules

- Inspect workbook context and dependencies before making assertions.
- Read exact ranges when explaining formulas or impact.
- Prefer concise findings tied to cells, named ranges, checks, tables, or functions.
- Add checks for discovered risks when the user wants the workbook hardened.
- Do not rewrite the model if an explanation or targeted check is enough.

## Audit Focus

Look for broken dependencies, stale constants, missing named ranges, formula drift, unvalidated assumptions, and checks that do not cover important outputs.