Conciseness

Mostly efficient but the search-by-default guidance is repeated three times ('Search Memory early for most non-trivial repository work', 'run at least one quick Memory search before substantial exploration', 'If unsure, do a quick Memory search') and the trigger bullet list overlaps heavily with line 23's blanket rule. Consolidating these would tighten the body; the repetition keeps it below 4.

Actionability

Concrete, executable guidance throughout ('Extract a few task-relevant keywords', 'Call search with a concise query', 'If there are no relevant hits, stop', explicit criteria for good memories and what not to store). Minor gap: no example search query or add-call payload; per the scoring notes an instruction-only skill without code is acceptable when the guidance is actionable, which it is.

Workflow Clarity

The Quick Memory pass is a clear 4-step sequence with an explicit stop condition ('If there are no relevant hits, stop') and a verification checkpoint ('verify drift-prone facts against the repo'). Not 5 because the Updating Memory section offers prose bullets rather than an equivalent sequenced workflow.

Progressive Disclosure

The skill is under 50 lines, needs no external references (none exist in the bundle), and is well organized into clear sections (boundary, quick pass, updating). Under the simple-skill guidance this qualifies for 5.

Specificity

Names the domain ('memory-as-tool') and two concrete actions ('add and search memories'), matching the 1-2-concrete-actions anchor; it does not list several specific actions or cover what memories contain, so it falls short of 4.

Completeness

Has a clear 'what' (add and search memories) but no 'Use when...' clause or equivalent explicit trigger guidance; 'throughout the Codex session' only weakly implies when. Per the guideline, the missing trigger guidance caps this at 3, and it is above 2 because the 'what' is concrete rather than vague.

Trigger Term Quality

Contains some relevant keywords ('memory', 'add', 'search', 'memories') but misses common variations and the natural phrases a user would actually say ('remember this', 'recall what we did', 'prior context'), so coverage is not good enough for 4.

Distinctiveness Conflict Risk

'memory-as-tool' carves a mostly distinct niche (persistent tool-based memory) with only minor overlap risk against closely related context/memory skills; it lacks the explicitly distinct trigger phrases needed for 5.