Conciseness

The body is five lean lines that assume Claude's competence: 'Invoke the custom-metrics skill instead — it contains the current, complete instructions.' Every token earns its place; there is no padding, no conceptual explanation, and no over-explanation, matching the 'lean and efficient' anchor exactly.

Actionability

The guidance is fully concrete and executable for an instruction-only skill: 'Invoke the custom-metrics skill instead' and 'update it from aiconfig-custom-metrics to custom-metrics' are specific, unambiguous actions with no pseudocode or vagueness. Per the rubric's scoring notes, absence of code is not penalized when the instruction-only guidance is actionable, so it sits above level 4.

Workflow Clarity

This is a simple, single-purpose skill with one unambiguous action (redirect to custom-metrics), which the rubric's simple-skill guidance allows to score 5. It even covers the edge case explicitly: if the reader arrived via an old reference, update it from the old name to the new one — a complete feedback path for the redirect's failure mode. No destructive or batch operations are involved, so no validation cap applies.

Progressive Disclosure

The skill is under 50 lines with no need for external references (no references/, scripts/, or assets/ directories exist, and the body references none), and the content is well-organized under a clear heading — matching the rubric's guidance that such skills score 5 with just well-organized sections. The pointer to custom-metrics 'contains the current, complete instructions' signals where the real content lives, one level deep.

Specificity

Phrases like 'this skill was renamed to custom-metrics' and 'invoke custom-metrics instead' name the domain (a deprecation redirect) and one concrete action, but the description conveys nothing about what the skill's actual capabilities are, so coverage is not comprehensive (not 4-5) yet far more concrete than pure vagueness like 'Helps with documents' (not 1-2).

Completeness

The 'what' is explicit and clear ('DEPRECATED redirect... invoke custom-metrics instead'), but there is no 'Use when...' or equivalent explicit trigger guidance, which the judging guidelines cap at 3. It is above level 2 because the 'what' is precise, not vague.

Trigger Term Quality

It contains the two skill-name keywords ('aiconfig-custom-metrics', 'custom-metrics') a user might type when routing here, but offers no natural trigger phrases or synonyms users would say when they need the underlying functionality. Not 2, since the named keywords are specific rather than generic; not 4, since common natural variations are entirely absent.

Distinctiveness Conflict Risk

Both the old and new skill names are stated verbatim, creating a clear niche where a user referencing either name routes correctly and is explicitly told which skill to invoke, giving minimal conflict risk with other skills.