Conciseness

The body never explains concepts Claude already knows and every section carries rules, but a handful of rhetorical flourishes could be trimmed — 'Silently narrowing to implementation recreates the very gap this skill exists to close', 'is what sends /spec-review and /coverage-check round in circles', 'is the fastest way to turn an audit into a rubber stamp'. This is anchor 4 (efficient, minor over-explanation); not 5 because not every token is load-bearing, and clearly not 3 since nothing is unnecessary in bulk.

Actionability

Fully concrete, copy-paste-ready instruction guidance: an argument token table with normalization rules, exact delegation payloads ('UC-001 both', 'UC-001 implementation work in progress'), exact path/glob patterns ('docs/use_cases/**/UC-XXX-*.md', '**/agents/uc-coverage.md'), per-gap-type commands, and a ready-to-emit '### Since the last run' markdown template. As an instruction-only skill, the absence of code is not penalized; this matches anchor 5.

Workflow Clarity

Six sequenced steps with explicit validation checkpoints: verify the specification exists and 'Stop and ask if it does not' (with near-match listing), state resolved arguments in one line before delegating so a wrong parse costs one rerun, present the report unchanged, and add a comparison on repeated runs. The batch sweep operation has full guardrails — pre-pass first, publish the triage table, cap of five full audits, and 'Ask before exceeding the cap, naming the number' — so the batch-operation cap does not apply. Anchor 5's explicit-validation and feedback-loop pattern is met.

Progressive Disclosure

The skill is deliberately a front door: the audit checklist 'lives in agents/uc-coverage.md ... and is deliberately not repeated here', a single well-signaled one-level-deep reference with navigation instructions (a glob for hosts that do not expose the plugin root, plus an inline fallback section). No bulk content is inlined that belongs elsewhere, and sections are clearly headed. This matches anchor 5's clear-overview-plus-referenced-detail pattern.

Specificity

Multiple concrete actions with comprehensive coverage: 'Audits an already-written use case (UC-XXX) or test case (TC-XXX) against its specification and reports a coverage matrix' enumerating 'main success scenario steps, alternative flows, business rules, preconditions, and postconditions', which are 'open', and which 'drifted away from the specification'. It sits at the anchor-5 example's level; no action in the skill's domain is missing, so 4's 'minor gaps' does not apply.

Completeness

Explicitly answers 'what' ('Audits ... and reports a coverage matrix ... It reports only — it writes no code, no tests, and no files') and 'when' with an explicit 'Use when the user asks to ...' clause listing concrete trigger phrases, plus boundary disambiguation ('specification coverage, not line coverage') and routing to /implement-style skills for gap closing. This is the anchor-5 pattern exactly; the 'when' is as explicit as it can be, so 4 does not fit.

Trigger Term Quality

Full-sentence natural user utterances are quoted verbatim as triggers — 'check coverage', 'is UC-001 fully implemented', 'audit the use case', 'show me the coverage matrix', 'do a traceability check', 'what is still missing for UC-001', 'can I set the status to Tested' — covering synonyms (coverage check / traceability check / audit). Matches anchor 5's comprehensiveness; 4's 'a few natural terms missing' would understate the coverage.

Distinctiveness Conflict Risk

Clear niche (specification-coverage auditing keyed to UC-XXX/TC-XXX identifiers) with distinct triggers, and active conflict prevention: 'This is specification coverage, not line coverage from a coverage report' and 'When the user wants the gaps closed rather than listed, use /implement, /implement-hilla, ... instead'. Minimal conflict risk per anchor 5.