Conciseness

The body is efficient with no concept re-teaching, containing only minor trimmable redundancy — the 'When to use this skill' list exactly duplicates the frontmatter description's trigger phrases, and 'What is covered' overlaps it too. It sits above the score-3 anchor (which implies editorializing) but short of 5 because of that duplication.

Actionability

Concrete commands are given ('./mvnw compile', 'mvn compile', './mvnw clean verify'), specific files to inspect ('pom.xml', the three named reference files), and concrete artifacts (@ChangeUnit, @MicronautTest, Testcontainers). Minor gap: no inline @ChangeUnit or bean-wiring code skeleton, so step 3 relies entirely on the reference files — mostly executable guidance with minor gaps.

Workflow Clarity

A clear 4-step sequence exists with explicit checkpoints (MANDATORY compile before, SAFETY stop on failure, VERIFY after), but this is a database-migration skill and the rubric caps workflow_clarity at 3 when no validate→fix→retry feedback loop is present — 'If compilation fails, stop immediately' halts rather than loops, and the verify step has no 'if it fails, fix and re-run' instruction.

Progressive Disclosure

SKILL.md is a genuine overview; the three referenced files (main guide, antipatterns, parallel-change) all exist, are one level deep, and are clearly signaled both in workflow step 1 and in a dedicated Reference section with markdown links. Content is appropriately split with easy navigation.

Specificity

The description lists six-plus concrete capabilities ('Mongock runner/driver selection, Micronaut bean wiring, migration scan packages, @ChangeUnit classes, lock/transaction settings, and Testcontainers verification'), matching the comprehensive score-5 anchor — but the opening 'Use when you need to' uses second-person voice, which the judging guidelines penalize by reducing specificity by 1.

Completeness

It explicitly answers both questions: the 'what' ('add or review Mongock MongoDB data migrations in a Micronaut application — including…') and the 'when' ('Use when you need to… This should trigger for requests such as…') with concrete trigger phrases, matching the score-5 anchor.

Trigger Term Quality

It enumerates five verbatim natural user requests ('Add Mongock migrations in Micronaut; Review Micronaut MongoDB data migrations; Configure Mongock change units with Micronaut Data MongoDB; Create Mongock change units for Micronaut MongoDB; Review Mongock migration ordering in a Micronaut service'), giving comprehensive coverage of the natural phrasings a user would actually say.

Distinctiveness Conflict Risk

The intersection of Mongock + Micronaut + MongoDB migrations is a clear niche with distinct triggers, and no generic language that would fire sibling skills; minimal conflict risk.