Conciseness

The body is dense, well-assumed-intelligent checklist content — it never explains what a balance sheet or DCF is, and every line ('PIK interest not accruing to principal', 'Terminal value not discounted back') is domain knowledge Claude would otherwise have to rediscover. Matches the 'lean and efficient; every token earns its place' anchor.

Actionability

Concrete, executable checks with explicit equality tests ('Total Assets = Total Liabilities + Equity (every period)', 'CFO + CFI + CFF = Δ Cash') plus a fully specified output table with columns and severity definitions. Falls short of anchor 5 because there is no mechanism for actually reading or parsing the spreadsheet file — no script, tool, or library pointer — leaving the inspection step to be improvised.

Workflow Clarity

A clear four-step sequence (determine scope → formula-level checks → model-integrity checks → report) where the steps themselves are validation checkpoints, augmented with triage guidance ('BS balance first', 'quantify the gap per period and trace where it breaks') and an explicit report-before-fix control ('Don't change anything without asking'). Matches the checklist-and-checkpoint anchor.

Progressive Disclosure

Well-organized sectioned structure with no bundle files, so all content lives appropriately in one SKILL.md. The model-type-specific bug lists (DCF / LBO / merger / 3-statement, ~30 lines) are the one block that could be split into per-model reference files to keep the main file tighter, keeping this below anchor 5.

Specificity

The description names the domain and several concrete actions — 'Audit a spreadsheet for formula accuracy, errors, and common mistakes', scoped to 'a selected range, a single sheet, or the entire model', with concrete integrity checks like 'BS balance, cash tie-out, and logic sanity'. It stops short of anchor 5 because it doesn't enumerate the full check coverage (formula errors, hardcodes, cross-sheet links) that the body delivers.

Completeness

Clearly and explicitly answers both: 'what' (audit a spreadsheet for formula accuracy, errors, and common mistakes, with three defined scopes) and 'when' via an explicit 'Triggers on' clause listing eight concrete trigger phrases. Matches the anchor-5 good example structure.

Trigger Term Quality

Strong natural phrases users would actually say: 'audit this sheet', 'check my formulas', 'QA this spreadsheet', 'model won't balance', "something's off in my model". Falls short of anchor 5 because common synonyms and file extensions like 'Excel', 'workbook', or '.xlsx' are absent.

Distinctiveness Conflict Risk

Clear niche — spreadsheet/financial-model auditing — with distinct, domain-specific triggers ('debug model', 'model won't balance') that would not fire for generic spreadsheet-creation or document skills. Minimal conflict risk.