Conciseness

The ~24-line body is a lean index: a one-sentence purpose with a routing rule, six terse workflow steps, and four labeled reference links. There is no padding, no explanation of concepts Claude already knows, and every token earns its place — matching the 'Lean and efficient' anchor exactly.

Actionability

Some concrete guidance exists — routing rules name exact skills ('build-zoom-meeting-sdk-app', 'build-zoom-video-sdk-app') and step 6 enumerates specific debug targets — but steps 2–4 ('Set up the required Video SDK session credentials and server-side signature generation', 'Pick the UI Toolkit integration shape and mount it') are high-level hints with no commands, code, or links to the relevant full-guide sections. Not a 2 because the routing decisions and enumerated topics are actionable as written; not a 4 because no step can be executed without opening the references.

Workflow Clarity

The six steps form a clear, coherent sequence (product fit → credentials → integration → configuration → routing → debugging), but no validation or verification checkpoints appear anywhere — e.g. nothing confirms the session token works before mounting or after configuration. This matches 'Steps listed but validation gaps; sequence present but checkpoints missing or implicit'; not a 4 because checkpoints are absent rather than minor-gapped.

Progressive Disclosure

The body is an appropriately lean overview with clearly labeled, one-level-deep references (full-guide.md holds the 17KB bulk; environment-variables.md is a tight table), matching 'Good structure; most content is appropriately placed'. Checked against the actual bundle, however, two of the four referenced paths do not resolve — 'troubleshooting/common-issues.md' does not exist in the bundle and '../video-sdk/web/SKILL.md' points outside it — keeping this below a 5.

Specificity

"Use when using Zoom UI Toolkit." names the domain but contains zero concrete actions or capabilities — it describes no what, only a use condition, matching the anchor 'Names the domain but actions are minimal or generic'. It is not a 1 because the domain reference is specific rather than pure abstract fluff; it is not a 3 because no concrete capability is listed anywhere.

Completeness

Only the 'when' is present ("Use when using Zoom UI Toolkit") with no statement of what the skill does — directly matching anchor 2's example 'Use when working with documents'. It is above 1 because the 'when' clause is present and references a concrete product, but below 3 because a clear 'what' is entirely absent.

Trigger Term Quality

"Zoom UI Toolkit" is a natural, specific phrase a user would say, but it is the only keyword — missing common variations like 'Zoom Video SDK', 'prebuilt Zoom UI', or 'custom Zoom session'. Fits 'Some relevant keywords but missing common variations or synonyms'; not a 2 since the keyword is domain-specific rather than generic, not a 4 since coverage is a single term with no synonyms.

Distinctiveness Conflict Risk

"Zoom UI Toolkit" is a distinct product name unlikely to fire for unrelated skills, so conflict risk is minor. It is not a 5 because the description gives no boundary against closely related sibling skills (Zoom Meeting SDK, Zoom Video SDK custom UI), which the body itself acknowledges as routing targets.