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Agent skill

301 Frameworks Spring Boot Core

by jabrena in jabrena/plinth

A skill your agent uses when you need to review, improve, or build Spring Boot 4.0.x applications — including proper usage of @SpringBootApplication, component annotations (@Controller, @Service…

Apache-2.0Auto-check passedBackend & APIs

Install 301 Frameworks Spring Boot Core

skills CLI
$ npx skills add jabrena/plinth --skill 301-frameworks-spring-boot-core -a claude-code

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

GitHub CLI
$ gh skill install jabrena/plinth 301-frameworks-spring-boot-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/301-frameworks-spring-boot-core .claude/skills/301-frameworks-spring-boot-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
301-frameworks-spring-boot-core
GitHub stars
447
Token cost
~986 tokens
SKILL.md length
350 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 you need to review, improve, or build Spring Boot 4.0.x applications — including proper usage of @SpringBootApplication, component annotations (@Controller, @Service…

  • You need to review
  • SKILL.md covers Constraints, When to use this skill, Workflow and Reference
  • Calls mvn
  • Build Spring Boot 4.0.x applications — including proper usage of @SpringBootApplication

What it does

301 Frameworks Spring Boot Core is an agent skill from jabrena/plinth. Use when you need to review, improve, or build Spring Boot 4.0.x applications — including proper usage of @SpringBootApplication, component annotations (@Controller, @Service, @Repository), bean definition and scoping, configuration classes and @ConfigurationProperties (with @Validated), component scanning, conditional configuration and profiles, constructor injection, @Primary and @Qualifier for multiple beans of the same type, bean minimization, graceful shutdown, virtual threads, Jakarta EE namespace…

Its SKILL.md is about 990 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/301-frameworks-spring-boot-core.md`).

It sits in Backend & APIs, covering Backend development and Scheduled and recurring tasks. It works with Spring Boot and 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

  • You need to review
  • Build Spring Boot 4.0.x applications — including proper usage of @SpringBootApplication
  • Component annotations (@Controller
  • Bean definition and scoping

Example prompts

  • “/301-frameworks-spring-boot-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

301 Frameworks Spring Boot Core loads about 986 tokens when it runs, and up to ~13k if it reads all its reference files. Until then it costs about 228 tokens; SKILL.md has 350 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~228
When it runs · the whole SKILL.md, loaded when a task matches
~986
With references · SKILL.md plus every file in references/, read only if the agent opens them
~13k

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). 350 words, ~986 tokens.

Download SKILL.mdSave it as .claude/skills/301-frameworks-spring-boot-core/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
301-frameworks-spring-boot-core
description
Use when you need to review, improve, or build Spring Boot 4.0.x applications — including proper usage of @SpringBootApplication, component annotations (@Controller, @Service, @Repository), bean definition and scoping, configuration classes and @ConfigurationProperties (with @Validated), component scanning, conditional configuration and profiles, constructor injection, @Primary and @Qualifier for multiple beans of the same type, bean minimization, graceful shutdown, virtual threads, Jakarta EE namespace consistency, and scheduled tasks. This should trigger for requests such as Review Java code for Spring Boot application; Apply best practices for Spring Boot application in Java code; Improve Spring Boot configuration properties and beans; Review Spring Boot component scanning and profiles; Tune Spring Boot graceful shutdown or virtual threads. Part of Plinth Toolkit
license
Apache-2.0
metadata.author
Juan Antonio Breña Moral
metadata.version
0.19.0

Spring Boot Core Guidelines

Apply Spring Boot Core guidelines for annotations, bean management, configuration, and dependency injection.

What is covered in this Skill?

  • @SpringBootApplication and main application class
  • Component annotations: @RestController, @Service, @Repository
  • Bean definition, scoping, lifecycle
  • Configuration classes and @ConfigurationProperties (with @Validated for fail-fast startup)
  • Component scanning and package organization
  • Conditional configuration and profiles (@Profile, @ConditionalOn*)
  • Constructor dependency injection
  • @Primary and @Qualifier for disambiguation when multiple beans share a type
  • Bean minimization and composition
  • Graceful shutdown for in-flight work
  • Virtual threads on supported stacks for concurrency-bound workloads
  • Jakarta EE namespace consistency (jakarta.* preferred; avoid mixing legacy javax.annotation / javax.validation)
  • Scheduled tasks and background processing

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

Constraints

Before applying any Spring Boot 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
  • 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
  • EDGE CASE: If request scope is ambiguous, stop and ask a clarifying question before applying changes
  • EDGE CASE: If required inputs, files, or tooling are missing, report what is missing and ask whether to proceed with setup guidance
Show full SKILL.md (127 more words)Show less

When to use this skill

  • Review Java code for Spring Boot application
  • Apply best practices for Spring Boot application in Java code
  • Improve Spring Boot configuration properties and beans
  • Review Spring Boot component scanning and profiles
  • Tune Spring Boot graceful shutdown or virtual threads

Workflow

  1. Read reference and assess project context

Read references/301-frameworks-spring-boot-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/301-frameworks-spring-boot-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/301-frameworks-spring-boot-core of jabrena/plinth.

  • SKILL.md
  • references/301-frameworks-spring-boot-core.md

Open the folder on GitHubat commit dca88dc

Compare with similar skills

301 Frameworks Spring Boot 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.

301 Frameworks Spring Boot Core compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
301 Frameworks Spring Boot Core this skilljabrena/plinth447—~986Automated safety check: PassApache-2.0
Spring Bootpiomin/claude-ai-spring-boot1.3k—~2kAutomated safety check: PassApache-2.0
Dr Jskilljdubois/dr-jskill342—~4.6kAutomated safety check: NotesApache-2.0
WxJava Integration Guidebinarywang/WxJava33k—~123Automated safety check: PassApache-2.0
Flycms Devsunkaifei/FlyCms656—~827Automated safety check: PassMIT
Intelliconnect Service Styleruanrongman/IntelliConnect147—~2.4kAutomated safety check: PassApache-2.0

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Works with

Categories

Questions about 301 Frameworks Spring Boot Core

What does 301 Frameworks Spring Boot Core do?

A skill your agent uses when you need to review, improve, or build Spring Boot 4.0.x applications — including proper usage of @SpringBootApplication, component annotations (@Controller, @Service…. 301 Frameworks Spring Boot Core is an agent skill from jabrena/plinth.

When should I use 301 Frameworks Spring Boot Core?

301 Frameworks Spring Boot Core fits situations like: you need to review; build Spring Boot 4.0.x applications — including proper usage of @SpringBootApplication; component annotations (@Controller; bean definition and scoping.

How do I install 301 Frameworks Spring Boot Core in Claude Code?

Run `npx skills add jabrena/plinth --skill 301-frameworks-spring-boot-core -a claude-code`. Or copy the skill folder (skills/301-frameworks-spring-boot-core in jabrena/plinth) into .claude/skills/301-frameworks-spring-boot-core in your project. Claude Code loads it when a task matches its description.

How do I install 301 Frameworks Spring Boot Core in Codex?

Run `npx skills add jabrena/plinth --skill 301-frameworks-spring-boot-core -a codex`. Or copy the skill folder (skills/301-frameworks-spring-boot-core in jabrena/plinth) into .agents/skills/301-frameworks-spring-boot-core in your project. Codex loads it when a task matches its description.

Can I use 301 Frameworks Spring Boot 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 301-frameworks-spring-boot-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/301-frameworks-spring-boot-core, .gemini/skills/301-frameworks-spring-boot-core, .github/skills/301-frameworks-spring-boot-core and .opencode/skills/301-frameworks-spring-boot-core in your project.

What does 301 Frameworks Spring Boot Core need to run?

Going by SKILL.md and its folder, 301 Frameworks Spring Boot Core needs the command-line tools its instructions call (mvn).

Does 301 Frameworks Spring Boot 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 301 Frameworks Spring Boot 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 301 Frameworks Spring Boot Core use?

301 Frameworks Spring Boot 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 301 Frameworks Spring Boot Core use?

About 986 tokens (SKILL.md is roughly 3.9k 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 12k tokens, read only when the agent opens those files.

What are the alternatives to 301 Frameworks Spring Boot Core?

Skills that share tags, products or a category with 301 Frameworks Spring Boot Core: Spring Boot (piomin/claude-ai-spring-boot, 1.3k stars), Dr Jskill (jdubois/dr-jskill, 342 stars), WxJava Integration Guide (binarywang/WxJava, 33k stars) and Flycms Dev (sunkaifei/FlyCms, 656 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains 301 Frameworks Spring Boot 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.