Lean body with no padding and no explanation of concepts Claude already knows; the "What is covered" list is terse and every line carries a concrete framework concern.

Gives concrete commands ("./mvnw compile", "./mvnw clean verify") and an explicit reference path to read; as an instruction-oriented skill the guidance is specific and executable rather than abstract, and code examples are appropriately deferred to the reference.

Four-step workflow is clearly sequenced with explicit validation checkpoints — compile-before, stop-if-fails, verify-after — forming a feedback loop for the risky batch/refactor operation.

The body is a concise overview pointing to one real, one-level-deep reference (references/501-frameworks-micronaut-core.md, verified to exist with no nested .md references), clearly signaled and well organized.

Lists multiple concrete capabilities — "Micronaut.run bootstrap, @Singleton/@Prototype, @Factory beans, @ConfigurationProperties, environments, @Requires, @Controller vs services, @Scheduled, graceful shutdown, @ExecuteOn" — each a specific framework action rather than vague language.

Explicitly answers both what (the enumerated Micronaut capabilities) and when via the "Use when building or reviewing Micronaut applications" clause plus concrete trigger examples, satisfying the "Use when..." requirement at the top level.

Natural user phrasings are given verbatim ("Review Java code for Micronaut application structure and beans", "Apply best practices for Micronaut configuration, @Requires, and factories", "Improve scheduling, shutdown, or threading in Micronaut services") covering common ways a user would request this.

Scoped tightly to Micronaut-specific APIs and triggers, giving it a clear niche that is unlikely to fire for other Java/framework skills.