Conciseness

The body assumes Claude's competence — it never explains what Basic Memory or git is — and every section earns its place with concrete config keys, exact frontmatter fields, and explicit commands rather than padded prose, matching the lean/efficient anchor; it is not 2 because there is no unnecessary concept explanation or filler to tighten.

Actionability

Guidance is fully executable: exact tags (["claude","checkpoint"]), exact note_type values, exact commands (git rev-parse HEAD, gh pr view --json), exact observation categories ([result]/[decision]/[blocker]/[next_step]), and a typed PR-number convention ("123"); this matches the copy-paste-ready anchor and exceeds the incomplete/pseudocode anchor at 2.

Workflow Clarity

A clear Gather -> Write -> Confirm sequence is reinforced with explicit validation guardrails — "Do not claim a test passed unless you ran it", "Stop if the required coding fields cannot be proven", and omitting PR fields when none exists — matching the anchor for explicit validation steps and feedback on error conditions; it is not 2 because checkpoints are stated, not merely implied.

Progressive Disclosure

No bundle files exist, so per the rubric's simple-skill guidance a single well-organized SKILL.md with clear sections can score 3; the Gather/Write/Confirm structure is clean and the only external pointers (bm-writing skill, write_note tool) are one level deep and clearly signaled.

Specificity

Names multiple concrete checkpoint components — "the story, changed files, verification, decisions, blockers, and the next action" — matching the anchor for listing several specific concrete actions; it is not below 3 because nothing is vague, and the imperative "Save" reads as third-person voice so no specificity penalty applies.

Completeness

It explicitly answers both what ("Save a deliberate work checkpoint to Basic Memory...") and when ("Use when the user asks to checkpoint, wrap up, hand off, or remember the state of the work"), the exact anchor for full completeness; it is not 2 because the 'when' clause is explicit, not implied.

Trigger Term Quality

"checkpoint, wrap up, hand off, or remember the state of the work" are natural phrases a user would actually say, giving good coverage of common variations rather than the single-term anchor at 2.

Distinctiveness Conflict Risk

The Basic Memory niche plus the distinctive trigger set (checkpoint/wrap-up/handoff/remember-state) make it unlikely to fire for the wrong skill, matching the clear-niche anchor; it is not 2 because the domain is specific rather than broadly overlapping.