Conciseness

The body is ~20 lean lines with zero padding and no explanation of concepts Claude already knows; every rule ('Show code central to the teaching arc', 'Add tags to cell.metadata.tags, preserving existing tags, code, and stored outputs') earns its place. It matches the 'lean and efficient; assumes Claude's competence' anchor.

Actionability

Guidance is fully concrete for an instruction-only skill: exact tag values ('hide-input', 'hide-output'), the exact metadata location ('cell.metadata.tags'), and per-case decision rules covering the common cases (incidental plotting, MCMC messages, explanatory figures). The scoring note says absence of code is not penalized when the guidance is this actionable, so it fits the top anchor.

Workflow Clarity

The sequence is clear: review visibility per cell, add tags while preserving existing content, then 'Check the rendered page when practical' and 'validate notebook structure and confirm code and results are unchanged'. Validation checkpoints are explicitly present, and the simple-skill exception (single task, under 50 lines) applies, so it is not capped at 3.

Progressive Disclosure

The skill is under 50 lines, needs no external references (no references/, scripts/, or assets/ bundle exists), and is organized into well-organized sections ('Notebook visibility' plus framing lines). Per the judging guideline, this matches the top anchor for simple skills.

Specificity

The description names the domain ('PyMC-Marketing documentation') and 1-2 actions ('creating or editing', 'Apply the repository's documentation conventions and notebook visibility policy'), matching the anchor for domain plus 1-2 concrete actions. It does not list several distinct specific actions, so it falls short of level 4.

Completeness

It explicitly answers 'when' with a clear 'Use whenever creating or editing...' trigger clause including small updates, and answers 'what' with 'Apply the repository's documentation conventions and notebook visibility policy'. The 'what' is somewhat abstract, keeping it below level 5.

Trigger Term Quality

Natural terms like 'documentation', 'notebooks', and the project name 'PyMC-Marketing' give good keyword coverage a user would naturally say. It lacks common synonyms and variations such as 'docs' or 'user guide', so it does not reach level 5.

Distinctiveness Conflict Risk

Anchored to the specific named repository (PyMC-Marketing) with distinct triggers around documentation and notebooks, giving it a clear niche with minimal conflict risk against generic skills.