Spreadsheet Model Builder — independently scanned and version-tracked by SaferSkills.
SaferSkills independently audited Spreadsheet Model Builder (Agent Skill) and scored it 100/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 0 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.
Findings & checks · 0 flagged
Every scanned point with the score it earned and what moved between them.
First recorded scan — no prior version to compare against.
The primary manifest — the file an agent reads to learn what this artifact does.
A good spreadsheet model is auditable, extensible, and self-documenting. The goal is not to impress with complexity but to be right in a way anyone can verify.
Separate the model into distinct sheets with clear roles:
No hardcoded number should appear inside a formula. If a value might ever change, it is an input.
Group assumptions by theme (revenue, costs, headcount, timing). Label every row clearly — include units and the basis for the assumption in an adjacent note column. Color-code inputs distinctly (e.g., blue text on white) so auditors can identify them at a glance without reading a legend.
Date the assumption set. When a model has multiple scenarios, each scenario is a separate column in the Inputs sheet — not a separate file.
One formula per row, consistent across all columns. If row 5 sums differently in column D than in column E, something is wrong. Audit with Ctrl+backslash (Windows) or Cmd+backslash (Mac) to spot inconsistencies.
Avoid:
Prefer INDEX+MATCH over VLOOKUP; it handles column insertions without breaking.
Before sharing, document three things in a 'Cover' sheet: what the model does, what the key assumptions are, and what changed in the last update. A model without a cover note is incomplete.
~30 seconds. Free. No account. Every finding cites a rule and a line of evidence.