Conciseness

The ~30-line body is a lean index: no padding, no explanation of concepts Claude already knows (nothing about what Unity or a video SDK is), and every line is either a navigation pointer or a source link. This matches the 'lean and efficient; every token earns its place' anchor.

Actionability

The body contains no code, commands, or concrete steps — it is entirely pointers ('Use this skill when building Unity apps that integrate Zoom Video SDK wrapper APIs' plus a file index). This matches 'minimal concrete guidance; high-level hints but missing the specific steps to execute', and is made worse because 7 of the 10 referenced files (unity.md, concepts/*, examples/*, scenarios/*, troubleshooting/*, RUNBOOK.md) do not exist in the bundle, so even the pointed-to guidance is unavailable. It is above the entirely-vague anchor 1 because the pointers are specific and real URLs are given.

Workflow Clarity

The numbered 'Start Here' list gives a clear reading sequence, but it sequences documentation reading, not the actual integration task — no task workflow, checkpoints, or validation appear in the body, and the referenced RUNBOOK.md checklist does not exist. This matches 'steps listed but validation gaps; sequence present but checkpoints missing or implicit' rather than the anchor-4 example, which sequences the actual task with per-step commands.

Progressive Disclosure

Scored against the actual bundle structure: the form is good (overview body with one-level-deep, clearly labeled reference links), but only references/environment-variables.md, references/unity-reference-map.md, and references/versioning-and-compatibility.md exist — the first seven 'Start Here' entries and RUNBOOK.md are broken paths, so the primary navigation path fails immediately. Broken references are a functional failure of disclosure at least as severe as the anchor-2 'references are buried / minimal structure' case; it does not merit 3 because the structure cannot actually be navigated as written.

Specificity

The description names the domain ('Zoom Video SDK for Unity wrapper integrations') and one-to-two concrete actions ('mapping Unity scene/UI state to Video SDK events'), but 'building custom Unity-based video session experiences' is generic and coverage is not comprehensive (no mention of session join/leave, audio/video streams, or event handling specifics). It matches the 'names domain and 1-2 concrete actions, but not comprehensive' anchor; it is below the anchor-4 example, which lists several distinct specific actions.

Completeness

Both parts are present: the 'what' ('Zoom Video SDK for Unity wrapper integrations... mapping Unity scene/UI state to Video SDK events') and an explicit 'Use when...' clause with concrete conditions. It does not reach 5 because the 'what' is a noun-phrase summary rather than explicit concrete actions (it never states what the skill actually does — implement, debug, configure), so the 'what' could be more explicit as in the anchor-5 example.

Trigger Term Quality

Good natural keyword coverage: 'Zoom Video SDK', 'Unity', 'wrapper', 'video session', 'Unity scene/UI' — phrases a user would naturally say. A few natural terms are missing (e.g., 'Unity app', '.unitypackage', 'Zoom meeting in Unity'), so it falls just short of the comprehensive-with-synonyms anchor 5.

Distinctiveness Conflict Risk

'Zoom Video SDK for Unity' is a clear, narrow niche with distinct triggers ('Unity', 'wrapper', 'Video SDK events'); the Unity qualifier distinguishes it from native-platform Zoom SDK skills, giving minimal conflict risk. This matches the anchor-5 'clear niche with distinct triggers' example.