Conciseness

Every section earns its place: the Quick start gives the exact tool call and expected output, the Why section states a real failure mode in two lines, and Workflow/Anti-patterns/Checklist each serve distinct purposes with no padding. There is no explanation of concepts Claude already knows, matching the 'Lean and efficient; every token earns its place' anchor.

Actionability

The Quick start is copy-paste-ready ("memory_sessions { \"project\": \"<current-project-id>\", \"limit\": 20 }") with a concrete expected-output example showing the exact display format, and the workflow steps include precise executable details (page via `nextCursor`, show first 8 chars of session id, reverse chronological order, limit 20). This fully covers the common case per the score-5 anchor for an instruction skill.

Workflow Clarity

A clear 5-step sequence with explicit error-recovery branches (unknown project id → page via `nextCursor` and match normalized `cwd` by directory boundary; state when a partial page is displayed; tool unavailable → Troubleshooting doc) plus a self-verification Checklist. The operation is read-only, so the destructive/batch cap does not apply; this matches the score-5 anchor with feedback loops and a checklist.

Progressive Disclosure

Sections are well organized (Quick start, Why, Workflow, Anti-patterns, Checklist, See also, Troubleshooting) and the single external reference is clearly signaled and one level deep. However, the link "See [TROUBLESHOOTING.md](TROUBLESHOOTING.md)" points to a file that does not exist anywhere in the bundle, a real organization gap; and the body exceeds 50 lines, so the simple-skill exception for an automatic 5 does not apply — fitting 'Good structure... minor organization gaps' rather than score 5.

Specificity

"Show what happened in recent past sessions on this project as a clean timeline" names the domain and a single concrete deliverable (a timeline), matching the anchor 'Names domain and 1-2 concrete actions, but not comprehensive'. It does not list several specific actions (e.g., listing sessions with ids/statuses or surfacing key decisions), so it is not a 4; it is more concrete than the generic score-2 example.

Completeness

Explicitly answers both what ("Show what happened in recent past sessions on this project as a clean timeline") and when ("Use when the user asks..." with concrete quoted trigger phrases). This directly matches the score-5 anchor; the 'when' clause is explicit with concrete triggers, so it exceeds the score-4 anchor where 'when' could be more specific.

Trigger Term Quality

Includes natural phrases users would say: "what did we do last time", "session history", "past sessions", "overview of previous work" — good coverage including a quoted user utterance. A few common variants are missing (e.g., "catch me up on recent work", "what did we work on"), so it falls short of the comprehensive score-5 anchor.

Distinctiveness Conflict Risk

The niche (project-scoped session history listing) is mostly distinct with specific triggers. Minor overlap risk remains with closely related sibling skills covering the same data (e.g., a user wanting "an overview of previous work" could match a recap-style skill), fitting 'Mostly distinct; minor overlap risk with closely related skills' rather than the minimal-risk score-5 anchor.