Conciseness

Five lean lines with no padding and no explanation of concepts Claude already knows; every token earns its place by directing to the authoritative playbook and the one substitution rule.

Actionability

Gives concrete executable guidance — specific file paths and a named 'invoke_subagent' function for the substitution — but it is a delegation pointer rather than copy-paste code, leaving a minor gap in how invoke_subagent is called.

Workflow Clarity

The read → execute → follow cog.md → apply substitution sequence is clear and unambiguous, though no explicit validation checkpoints are present (acceptable for a thin dispatcher).

Progressive Disclosure

SKILL.md acts as an overview that delegates to one-level-deep, clearly signaled references (the authoritative playbook, cog.md, per-worker agent files); the references are external system files rather than this skill's bundle, keeping it just short of the top anchor.

Specificity

Lists multiple concrete actions — 'decomposes questions into parallel research threads, spawns multiple agents, and synthesizes into actionable strategic analysis' — giving comprehensive coverage of what the engine does.

Completeness

It clearly answers 'what' but provides no 'Use when...' clause or equivalent explicit trigger guidance for when to invoke it, which caps completeness at 3 per the rubric guideline.

Trigger Term Quality

'research' and 'strategic analysis' are relevant but the description lacks common natural variations, synonyms, or user-facing phrasings a person would say, missing terms like 'deep research' or 'research report'.

Distinctiveness Conflict Risk

'Deep strategic research engine' is a fairly distinct niche with low overlap risk, though the absence of explicit trigger phrases keeps it from being unambiguously distinguishable from related research skills.