Conciseness

The routing table, compact output-contract blocks, and terse anti-pattern list are token-efficient and assume Claude's competence, but the "Why this exists" section partially restates the intro's already-stated point ("difference is the tool-result they return is compressed" vs "returns 2k tokens of prose costs 2k tokens of main-context budget"). Minor redundancy that could be trimmed — matching anchor 4 rather than 5.

Actionability

Provides a task→agent routing table, exact copy-parseable output-contract formats for each preset, three named chaining patterns with numbered steps, and a one-line decision rule ("if you'd want the subagent's output in 1/3 the tokens, pick cavecrew"). For an instruction-only skill this is fully actionable guidance covering the common cases.

Workflow Clarity

Chaining patterns are clearly sequenced (locate → fix → verify) with explicit validation checkpoints woven in: the builder's `verified: <re-read OK | mismatch @ path:line>` feedback field, the reviewer audit step, and the rule to spot-check absence claims and cited line numbers before acting. Not a destructive/batch skill, so no validation cap applies.

Progressive Disclosure

No bundle files exist (references/, scripts/, assets/ are all absent) and none are needed: every section — routing table, contracts, patterns, anti-patterns — appropriately lives inline in a single well-organized ~70-line file with clear headers and easy navigation, and there are no dangling external references.

Specificity

Names three concrete, scope-qualified actions — "locate code", "1-2 file edit", "diff review" — one per preset, plus the distinguishing property "Their output is compressed". This is comprehensive coverage for a delegation-routing skill, matching the anchor for multiple specific concrete actions; it is above anchor 4 because no capability is left vague or missing.

Completeness

Explicitly answers both: the what ("delegate to `cavecrew-investigator` (locate code), `cavecrew-builder` (1-2 file edit) or `cavecrew-reviewer` (diff review)... output is compressed") and the when ("When to delegate to... instead of working inline or using `Explore`"). It is above anchor 4's floor because the when-clause is explicit, but below anchor 5 because the 'when' is framed comparatively rather than with concrete user trigger phrases.

Trigger Term Quality

Includes good task-relevant keywords ("locate code", "1-2 file edit", "diff review") and contrast terms ("working inline", "Explore"), but misses common natural variations a user would say, such as "where is X defined", "find usages", "code review", or "review this diff". This sits between anchor 3 (missing variations) and anchor 5 (full synonym coverage).

Distinctiveness Conflict Risk

Names three specific presets and explicitly demarcates them from alternatives ("instead of working inline or using `Explore`"), establishing a clear niche with minimal conflict risk — it can only trigger when a cavecrew agent is the candidate tool.