Conciseness

The body is largely tight — bulleted output specs, named risk scores (TIMI, GRACE, CURB-65, Wells), and a concrete dose example ('Piperacillin-Tazobactam 4.5g IV q8h for 5 days') with little concept explanation Claude already knows. However, the Brief Rounds structure is stated twice in the body ('What you will produce' and again in Step 2) and both reference files are re-announced in Steps 0 and 7, so minor trimming is possible — anchor 4 ('efficient; minor instances that could be trimmed'), not 5.

Actionability

Guidance is fully executable for an instruction-only skill: an HPI prose template with placeholder syntax, exact differential count ('exactly 3 to 5 items, each with one sentence'), named validated clinical scores per condition, an explicit fallback ('write "[drug name] — dose per local formulary/protocol"'), and a concrete HTML snippet showing data-od-id section tagging and print CSS. Specific examples cover the common cases, matching anchor 5.

Workflow Clarity

A clearly sequenced Step 0–7 workflow with an explicit validation checkpoint and feedback loop: Step 7 'run every P0 item in references/checklist.md... Fix any failures before emitting' — the validate → fix → re-check pattern of anchor 5. Step 1 also defines a decision gate for missing chief complaint. Anchor 4 would leave validation implicit or have gaps, which it does not.

Progressive Disclosure

Both referenced files (references/case-formats.md, references/checklist.md) exist, are one level deep, and are clearly signaled in Step 0 — good structure per anchor 4. It falls short of anchor 5 because the body inlines full format specifications (both SOAP and Brief Rounds section lists in 'What you will produce' and Step 2) that duplicate case-formats.md rather than splitting that detail into the reference.

Specificity

Quotes: 'Generates SOAP-format or narrative case reports with physiologically accurate vitals, labs, and evidence-based plans' — several concrete actions (case reports, vitals, labs, plans) but minor gaps in coverage (e.g., HTML output artifact and format selection are not mentioned). Fits anchor 4 ('lists several specific actions; minor gaps') rather than 5, which would require comprehensively covering the skill's full capability set, and above 3, which permits only 1–2 actions.

Completeness

Explicit 'what': 'Structured medical case presentation for clinical rounds, conferences, and documentation. Generates SOAP-format or narrative case reports...' plus an explicit 'Use when' clause with seven concrete trigger phrases. This mirrors anchor 5 ('clearly and explicitly answers both what AND when with concrete trigger phrases') exactly; anchor 4 would require a weaker or less specific 'when'.

Trigger Term Quality

Quotes: '"case report", "case presentation", "SOAP note", "clinical case", "ward rounds", "case summary", "patient presentation"' — comprehensive natural phrases a clinician would actually say, including the specialist shorthand 'SOAP note' and 'ward rounds'. Matches anchor 5's comprehensive synonym coverage; anchor 4 would imply missing common variations, and none of significance are absent (the separate triggers list adds 'medical case').

Distinctiveness Conflict Risk

The clinical case-presentation niche with SOAP/ward-rounds triggers is clearly distinct from generic document or writing skills, matching anchor 5 ('clear niche with distinct triggers; minimal conflict risk'). It is not anchor 4 because the triggers are unambiguous clinical presentation phrases with no meaningful overlap risk with adjacent skills.