Conciseness

The ~150-word body is dense with claude-mem-specific facts ('Every Read, Edit, and Bash that Claude makes turns into a compressed observation', 'Everything stays in ~/.claude-mem'), assuming Claude's competence throughout. It falls just short of anchor 5 because of minor trimmable flourishes — 'no re-explaining the codebase, no re-discovering decisions' — and slight redundancy between 'on this machine' and 'Nothing leaves your machine'.

Actionability

Concrete, checkable facts throughout: the path '~/.claude-mem', the command 'Run /learn-codebase... (~5 minutes, optional)', the cleanup command 'npx claude-mem uninstall', and the timing rule 'Memory injection starts on your second session'. This fits 'Mostly executable guidance; concrete code or commands with minor gaps' — it stops short of anchor 5 only because some adjacent common cases (e.g., how to inspect what's stored, how to disable injection) are unaddressed.

Workflow Clarity

This is a simple single-purpose skill (answer 'how does claude-mem work'), and the single action is unambiguous: the three sections ('What it does', 'When it kicks in', 'Where data lives') mirror the description's three promises one-to-one. Per the simple-skill guideline this earns a 5; there are no destructive or batch operations, so no validation cap applies.

Progressive Disclosure

The body is under 50 lines, needs no external references (no references/, scripts/, or assets/ exist in the bundle, and none are cited), and is organized into clear sections that each answer one question. Per the under-50-lines guideline, well-organized sections alone earn a 5 here.

Specificity

The description lists multiple concrete capabilities — 'Explain how claude-mem captures observations, when memory injection kicks in, and where data lives' — covering capture, injection timing, and data location, which maps comprehensively onto the skill's scope. It matches the anchor 'Lists multiple specific concrete actions; comprehensive coverage'; a 4 would require minor gaps in coverage, but all three facets of the skill are named explicitly.

Completeness

Explicitly answers both parts: the 'what' ('Explain how claude-mem captures observations, when memory injection kicks in, and where data lives') and the 'when' with concrete trigger phrases ('Use when the user asks "how does claude-mem work?" or "what is this thing doing?"'). This matches the anchor-5 example's structure exactly; a 4 would have a 'when' clause that is present but less explicit.

Trigger Term Quality

Includes two natural quoted user phrasings — 'how does claude-mem work?' and 'what is this thing doing?' — that a user would genuinely say. It falls short of the anchor-5 example's comprehensive synonym coverage: natural variants like 'how does memory work', 'where does it store my data', or 'is my data sent anywhere' are not covered.

Distinctiveness Conflict Risk

Names a clear niche (claude-mem internals) with distinct, product-specific triggers unlikely to fire for any other skill. It matches 'Clear niche with distinct triggers; minimal conflict risk'; a 4 would require minor overlap with closely related skills, and none is evident.