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Agent skill

501 Frameworks Micronaut Core

by jabrena in jabrena/plinth

A skill your agent uses when building or reviewing Micronaut applications — Micronaut.run bootstrap, @Singleton/@Prototype, @Factory beans, @ConfigurationProperties, environments, @Requires…

Apache-2.0Auto-check passedDevelopment

Install 501 Frameworks Micronaut Core

skills CLI
$ npx skills add jabrena/plinth --skill 501-frameworks-micronaut-core -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jabrena/plinth 501-frameworks-micronaut-core --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jabrena/plinth.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/501-frameworks-micronaut-core .claude/skills/501-frameworks-micronaut-core && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
501-frameworks-micronaut-core
GitHub stars
447
Token cost
~876 tokens
SKILL.md length
309 words
Files
2 (incl. references)
Skills in repo
124
Repo updated
First seen
Licence
Apache-2.0

At a glance

A skill your agent uses when building or reviewing Micronaut applications — Micronaut.run bootstrap, @Singleton/@Prototype, @Factory beans, @ConfigurationProperties, environments, @Requires…

  • Reviewing Micronaut applications — Micronaut.run bootstrap
  • SKILL.md covers Constraints, When to use this skill, Workflow and Reference
  • Calls mvn
  • @Singleton/@Prototype

What it does

501 Frameworks Micronaut Core is an agent skill from jabrena/plinth. Use when building or reviewing Micronaut applications — Micronaut.run bootstrap, @Singleton/@Prototype, @Factory beans, @ConfigurationProperties, environments, @Requires, @Controller vs services, @Scheduled, graceful shutdown, @ExecuteOn for blocking work, and Jakarta-consistent APIs. This should trigger for requests such as Review Java code for Micronaut application structure and beans; Apply best practices for Micronaut configuration, @Requires, and factories; Improve scheduling, shutdown, or threading in…

Its SKILL.md is about 880 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/501-frameworks-micronaut-core.md`).

It sits in Development, covering Design patterns. It works with Java. The repository describes itself as: Plinth is an AI-native engineering toolkit for modern Java enterprise SDLC, built around reusable Commands, Agents, Skills, and MCP Servers. The licence is Apache-2.0.

When your agent uses it

  • Reviewing Micronaut applications — Micronaut.run bootstrap
  • @Singleton/@Prototype
  • @ConfigurationProperties
  • @Controller vs services

Example prompts

  • “/501-frameworks-micronaut-core”

What it can do on your machine

Read from SKILL.md and the folder at commit dca88dc. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • mvn

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

501 Frameworks Micronaut Core loads about 876 tokens when it runs, and up to ~6k if it reads all its reference files. Until then it costs about 177 tokens; SKILL.md has 309 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~177
When it runs · the whole SKILL.md, loaded when a task matches
~876
With references · SKILL.md plus every file in references/, read only if the agent opens them
~6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jabrena/plinth at commit dca88dc, republished under its Apache-2.0 licence (© jabrena). 309 words, ~876 tokens.

Download SKILL.mdSave it as .claude/skills/501-frameworks-micronaut-core/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
501-frameworks-micronaut-core
description
Use when building or reviewing Micronaut applications — Micronaut.run bootstrap, @Singleton/@Prototype, @Factory beans, @ConfigurationProperties, environments, @Requires, @Controller vs services, @Scheduled, graceful shutdown, @ExecuteOn for blocking work, and Jakarta-consistent APIs. This should trigger for requests such as 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. ; Review Micronaut dependency injection scopes and factories; Configure Micronaut @Requires conditions for environments. Part of Plinth Toolkit
license
Apache-2.0
metadata.author
Juan Antonio Breña Moral
metadata.version
0.19.0

Micronaut Core Guidelines

Apply Micronaut core guidelines for DI, configuration, HTTP adapters, and operations.

What is covered in this Skill?

  • Thin main with Micronaut.run(Application.class, args)
  • Bean scopes: @Singleton, @Prototype; request scope only when justified
  • Constructor injection with jakarta.inject.Inject
  • @Factory for third-party or explicit bean construction
  • @ConfigurationProperties (grouped settings) vs scattered @Property
  • @Requires and environments instead of env branching in domain code
  • Thin @Controller types delegating to @Singleton services
  • @Scheduled with explicit failure visibility
  • @ExecuteOn(TaskExecutors.BLOCKING) (or virtual-thread executors) for blocking I/O off the event loop
  • Netty graceful shutdown properties
  • AOP interceptors for cross-cutting concerns

Scope: Apply recommendations based on the reference rules and good/bad code examples.

Constraints

Before applying Micronaut changes, ensure the project compiles. If compilation fails, stop immediately. After applying improvements, run full verification.

  • MANDATORY: Run ./mvnw compile or mvn compile before applying any change
  • PREREQUISITE: Project must compile successfully before applying Micronaut core improvements
  • SAFETY: If compilation fails, stop immediately — compilation failure is a blocking condition
  • VERIFY: Run ./mvnw clean verify or mvn clean verify after applying improvements
  • BEFORE APPLYING: Read the reference for detailed rules, good/bad patterns, and constraints

When to use this skill

  • 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
  • Review Micronaut dependency injection scopes and factories
  • Configure Micronaut @Requires conditions for environments

Workflow

  1. Read reference and assess project context

Read references/501-frameworks-micronaut-core.md and inspect the current project setup before proposing changes.

  1. Gather scope and decide target improvements

Identify requested outcomes, constraints, and the minimum safe set of changes to apply.

  1. Apply framework-aligned changes

Implement or refactor configuration/code following the reference patterns and project conventions.

  1. Run verification and report results

Execute appropriate build/tests and summarize what changed, what was verified, and any follow-up actions.

Reference

For detailed guidance, examples, and constraints, see references/501-frameworks-micronaut-core.md.

© jabrena, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in skills/501-frameworks-micronaut-core of jabrena/plinth.

  • SKILL.md
  • references/501-frameworks-micronaut-core.md

Open the folder on GitHubat commit dca88dc

Compare with similar skills

501 Frameworks Micronaut Core next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

501 Frameworks Micronaut Core compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
501 Frameworks Micronaut Core this skilljabrena/plinth447—~876Automated safety check: PassApache-2.0
Java Design Patterns Referencedecebals/claude-code-java7511 repos~4.4kAutomated safety check: PassMIT
Java Architecture Reviewdecebals/claude-code-java751—~2.2kAutomated safety check: PassMIT
Clean Code Principlesdecebals/claude-code-java751—~3.4kAutomated safety check: PassMIT
Solid Principlesdecebals/claude-code-java751—~4.2kAutomated safety check: PassMIT
Hexagonal Architecture Layers JavaGentleman-Programming/Gentleman-Skills658—~1kAutomated safety check: PassMIT

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Works with

Categories

Questions about 501 Frameworks Micronaut Core

What does 501 Frameworks Micronaut Core do?

A skill your agent uses when building or reviewing Micronaut applications — Micronaut.run bootstrap, @Singleton/@Prototype, @Factory beans, @ConfigurationProperties, environments, @Requires…. 501 Frameworks Micronaut Core is an agent skill from jabrena/plinth.run bootstrap, @Singleton/@Prototype, @Factory beans, @ConfigurationProperties, environments, @Requires, @Controller vs services, @Scheduled, graceful shutdown, @ExecuteOn for blocking work, and Jakarta-consistent APIs.

When should I use 501 Frameworks Micronaut Core?

501 Frameworks Micronaut Core fits situations like: reviewing Micronaut applications — Micronaut.run bootstrap; @Singleton/@Prototype; @ConfigurationProperties; @Controller vs services.

How do I install 501 Frameworks Micronaut Core in Claude Code?

Run `npx skills add jabrena/plinth --skill 501-frameworks-micronaut-core -a claude-code`. Or copy the skill folder (skills/501-frameworks-micronaut-core in jabrena/plinth) into .claude/skills/501-frameworks-micronaut-core in your project. Claude Code loads it when a task matches its description.

How do I install 501 Frameworks Micronaut Core in Codex?

Run `npx skills add jabrena/plinth --skill 501-frameworks-micronaut-core -a codex`. Or copy the skill folder (skills/501-frameworks-micronaut-core in jabrena/plinth) into .agents/skills/501-frameworks-micronaut-core in your project. Codex loads it when a task matches its description.

Can I use 501 Frameworks Micronaut Core in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jabrena/plinth --skill 501-frameworks-micronaut-core -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/501-frameworks-micronaut-core, .gemini/skills/501-frameworks-micronaut-core, .github/skills/501-frameworks-micronaut-core and .opencode/skills/501-frameworks-micronaut-core in your project.

What does 501 Frameworks Micronaut Core need to run?

Going by SKILL.md and its folder, 501 Frameworks Micronaut Core needs the command-line tools its instructions call (mvn).

Does 501 Frameworks Micronaut Core access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is 501 Frameworks Micronaut Core safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does 501 Frameworks Micronaut Core use?

501 Frameworks Micronaut Core is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does 501 Frameworks Micronaut Core use?

About 876 tokens (SKILL.md is roughly 3.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 5.1k tokens, read only when the agent opens those files.

What are the alternatives to 501 Frameworks Micronaut Core?

Skills that share tags, products or a category with 501 Frameworks Micronaut Core: Java Design Patterns Reference (decebals/claude-code-java, 751 stars), Java Architecture Review (decebals/claude-code-java, 751 stars), Clean Code Principles (decebals/claude-code-java, 751 stars) and Solid Principles (decebals/claude-code-java, 751 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains 501 Frameworks Micronaut Core?

jabrena (a GitHub user) maintains it in jabrena/plinth, which has 447 GitHub stars. The repository holds 124 skills in this directory. The repository was last updated on October 7, 2026.

Source: jabrena/plinth on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.