Conciseness

The ~54-line body is pure rules and examples with zero padding — no concept explanations Claude already knows, and even meta-guidance ("Token savings are small and noisy; never claim them") earns its place. Every token earns its place.

Actionability

Concrete Bad/Good example pairs in real 文言 (e.g. "每繪新生對象參照，故重繪；以 `useMemo` 包之則免"), explicit floors (negation characters, Arabic numerals, verbatim identifiers), and a literal pre-send checklist give fully actionable guidance; per the rubric's code-vs-instruction note, an instruction-only skill needs no code when guidance is this concrete.

Workflow Clarity

A single-action skill whose action is unambiguous: persistence semantics ("Unsure? Still on."), status-command behavior, escape hatches ("When to break the rules"), and a pre-send validation check. It is not a destructive or batch skill, so no validation cap applies and the simple-skill exception holds.

Progressive Disclosure

Well-organized single-file skill with clear sections (Persistence, Floor, Rules, When to break the rules, Pre-send check); no bundle files exist and nothing is inlined that belongs in a separate file, matching the rubric's simple-skill guidance for short skills needing no external references.

Specificity

"文言文 register, far fewer characters, technical terms verbatim" names several concrete behaviors of the output rather than vague filler, but the skill performs one transformation rather than a list of distinct actions, leaving minor coverage gaps.

Completeness

The "what" (文言 register, fewer characters, technical terms verbatim) and the "when" ("Invoke only with /megacave or /caveman wenyan") are both explicitly stated with concrete trigger phrases, plus termination conditions, matching the top anchor.

Trigger Term Quality

Natural terms a user would say are present ("caveman", "Classical Chinese", "文言文", "wenyan") alongside explicit commands ("/megacave", "/caveman wenyan", "stop caveman", "normal mode"), though a few obvious synonyms (e.g. "文言" alone) are missing.

Distinctiveness Conflict Risk

A caveman-in-Classical-Chinese register mode gated to explicit slash commands occupies a clear niche with essentially no overlap risk against other skills.