Conciseness

The body is lean and directive throughout ("1-3 sentences max, lead with the answer, not the process", "SHUT UP. Wait.") with essentially no explanation of concepts Claude already knows. It falls short of anchor 5 only because the read-only/write-prohibition contract is stated three times (the Trust blockquote, the Tool posture section, and the Contract section), which could be consolidated.

Actionability

Guidance is fully concrete and copy-paste ready for an instruction-only skill: an exact example URL ('/call?persona=venus&topicId=q3-planning&topicName=Q3%20Planning'), the exact topicId slug regex, exact tool op names, exact file paths, exact fallback phrasings ("I can't save from voice; tell me again when you're at your screen"), and second-precision timing rules. This matches 'fully executable... specific examples cover the common cases'.

Workflow Clarity

The flow — trigger match, session persona resolution, prompt file, tool surface, timing rules — is clearly sequenced with a stated fallback ('No topicId → Venus uses her generic today-at-a-glance context'). It is anchor 4 rather than 5 because there are no error-recovery/feedback loops (e.g., what to do when a topicId fails the slug validation is unspecified). No destructive or batch operations exist, so the cap-at-3 rule does not apply.

Progressive Disclosure

No bundle files exist, so structure rests on the file itself: sections are well-organized with clear headers, and external references (services/voice-agent/code/tools.mjs, ../voice-persona-mars/SKILL.md) are clearly signaled and one level deep. It is not a 5 because those references point outside the skill bundle (not navigable within it), and the 'Output Format' section exists purely for test compatibility rather than user-facing navigation.

Specificity

The description's only concrete action verb is "Route to Venus"; "calendar, tasks, recent messages, brain lookups" name domain areas rather than distinct actions, matching the anchor for naming a domain with 1-2 concrete actions but not comprehensive coverage. A score of 4 would require several specific listed actions (the way 'extracts, fills, merges' does), which this single-verb description lacks.

Completeness

Both parts are present: "Route to Venus (sharp executive-assistant voice persona)... at sub-second phone-call latency" answers what, and "Used for logistics — calendar, tasks, recent messages, brain lookups" is an explicit when-clause (so the 3-cap does not apply). The when is a domain listing rather than concrete trigger phrasing, and the trailing "default unless DEFAULT_PERSONA=mars" clause dilutes it, keeping this at anchor 4 rather than 5.

Trigger Term Quality

Natural user vocabulary is present — "calendar", "tasks", "recent messages", "phone-call" — but common synonyms a caller would say ("schedule", "agenda", "reminders", "to-dos") appear only in the frontmatter triggers list, not in the description itself. This fits 'good keyword coverage; a few natural terms missing' rather than the comprehensive synonym coverage of a 5.

Distinctiveness Conflict Risk

"Sharp executive-assistant voice persona" plus the explicit "unless DEFAULT_PERSONA=mars is set" disambiguation carves a mostly distinct niche and directly handles the closest sibling skill. It is not a 5 because "calendar" and "tasks" are generic words with overlap risk against ordinary productivity/task skills, and a closely related sister persona shares the voice-persona space.