Conciseness

The body contains no padding and no explanation of concepts Claude already knows; every sentence carries operational information (action aliases, the 280-weight reply limit, list/listen defaults, exact error strings, tool boundaries). It matches 'Lean and efficient; assumes Claude's competence; every token earns its place'.

Actionability

It provides a concrete bash command block (like/comment --text/follow --confirm/call/--help), exact defaults (list 20 items, max 100; --duration 1s-10m, default 1m), and the exact error string 'Blue claim is not enabled for note tweet'. It falls short of level 5 only because query/listen examples are not shown and '<平台选项>' remains a bare placeholder.

Workflow Clarity

Real checkpoints are present for risky write operations: writes default to preview and require --confirm; on timeout/disconnect the result must be verified before any retry (no channel-switch resends); outcomes must be recorded with real target/action/result; preview must never be treated as delivered. It is below level 5 because these are scattered across paragraphs rather than a single explicit sequence with error-recovery loops.

Progressive Disclosure

The skill is under 50 lines, single-purpose, and needs no external reference files (none exist in the bundle); pointers to sibling tools (x-hunter, expert-osbi, expert-bd) are clearly named. The minor gap keeping it at level 4 is the complete absence of section headers — organization is paragraph-only.

Specificity

The description names the domain ("X/Twitter作品互动") but states no concrete actions, deferring entirely to an external capability table ("支持范围以工具能力表为准"). This matches the anchor 'Names the domain but actions are minimal or generic'; it is not level 3 because not even 1-2 concrete actions are stated in the description itself.

Completeness

"作品互动" is a vague 'what' (its scope is delegated to a capability table elsewhere) and there is no 'when/Use when' clause at all. This is exactly the anchor 'Has a vague what and no when'; level 3 would require a clear 'what' with concrete capability statements.

Trigger Term Quality

"X/Twitter" and "互动" are relevant keywords, but the natural phrases users would actually say — 点赞 (like), 转发 (retweet), 关注 (follow), 评论 (comment), 收藏/bookmark — are all missing. This matches 'Some relevant keywords but missing common variations or synonyms' rather than level 4, which requires good coverage with only a few natural terms missing.

Distinctiveness Conflict Risk

The X interaction niche is somewhat specific, but the description does not delineate its boundary against the sibling twitter-post skill (that boundary exists only in the body), and the capability-table deferral adds no distinguishing information. Matches 'Somewhat specific but could still overlap with similar skills'.