Agent skill

302 Frameworks Spring Boot REST

by jabrena in jabrena/plinth

A skill your agent uses when you need to design, review, or improve REST APIs with Spring Boot — including HTTP methods, resource URIs, status codes, DTOs, versioning, deprecation and sunset…

Apache-2.0Auto-check passedBackend & APIs

Install 302 Frameworks Spring Boot REST

skills CLI
$ npx skills add jabrena/plinth --skill 302-frameworks-spring-boot-rest -a claude-code

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

GitHub CLI
$ gh skill install jabrena/plinth 302-frameworks-spring-boot-rest --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/302-frameworks-spring-boot-rest .claude/skills/302-frameworks-spring-boot-rest && 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
302-frameworks-spring-boot-rest
GitHub stars
447
Token cost
~1k tokens
SKILL.md length
390 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 design, review, or improve REST APIs with Spring Boot — including HTTP methods, resource URIs, status codes, DTOs, versioning, deprecation and sunset…

  • You need to design
  • SKILL.md covers Constraints, When to use this skill, Workflow and Reference
  • Calls mvn
  • Improve REST APIs with Spring Boot — including HTTP methods

What it does

302 Frameworks Spring Boot REST is an agent skill from jabrena/plinth. Use when you need to design, review, or improve REST APIs with Spring Boot — including HTTP methods, resource URIs, status codes, DTOs, versioning, deprecation and sunset headers, content negotiation (JSON and vendor media types), ISO-8601 instants in DTOs, pagination/sorting/filtering, Bean Validation at the boundary, idempotency, ETag concurrency, HTTP caching, error handling, security, contract-first OpenAPI (OpenAPI Generator), controller advice, and problem details for errors. This should trigger for…

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/302-frameworks-spring-boot-rest.md`).

It sits in Backend & APIs, covering Backend development, REST APIs and OpenAPI specifications. It works with Spring Boot, Java and OpenAPI. 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 design
  • Improve REST APIs with Spring Boot — including HTTP methods
  • Deprecation and sunset headers
  • Content negotiation (JSON and vendor media types)

Example prompts

  • “/302-frameworks-spring-boot-rest”

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

302 Frameworks Spring Boot REST loads about 1k tokens when it runs, and up to ~12k if it reads all its reference files. Until then it costs about 212 tokens; SKILL.md has 390 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~212
When it runs · the whole SKILL.md, loaded when a task matches
~1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~12k

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). 390 words, ~1,014 tokens.

Download SKILL.mdSave it as .claude/skills/302-frameworks-spring-boot-rest/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
302-frameworks-spring-boot-rest
description
Use when you need to design, review, or improve REST APIs with Spring Boot — including HTTP methods, resource URIs, status codes, DTOs, versioning, deprecation and sunset headers, content negotiation (JSON and vendor media types), ISO-8601 instants in DTOs, pagination/sorting/filtering, Bean Validation at the boundary, idempotency, ETag concurrency, HTTP caching, error handling, security, contract-first OpenAPI (OpenAPI Generator), controller advice, and problem details for errors. This should trigger for requests such as Review Java code for Spring Boot REST API; Apply best practices for Spring Boot REST API in Java code; Design Spring Boot REST controllers and DTOs; Add Problem Details error responses in Spring Boot REST; Improve pagination validation or idempotency in Spring APIs. Part of Plinth Toolkit
license
Apache-2.0
metadata.author
Juan Antonio Breña Moral
metadata.version
0.19.0

Java REST API Design Principles

Apply REST API design principles for Spring Boot applications.

What is covered in this Skill?

  • HTTP methods (GET, POST, PUT, PATCH, DELETE) — semantic consistency
  • Resource URI design
  • HTTP status codes
  • Request/response DTOs with lean contracts
  • API versioning (URI, header, or media type — applied consistently)
  • Bean Validation at the boundary (@Valid/@Validated on controller inputs, 400 on failure)
  • Pagination, sorting, and filtering (Page/Pageable with caps)
  • ISO-8601 instants with offset (OffsetDateTime, Instant) in JSON contracts
  • Content negotiation (JSON default; vendor media types when meaningful)
  • Idempotency-Key support for POST creates; 409 Conflict for collisions
  • ETag concurrency with If-Match/If-None-Match; 412 Precondition Failed / 304 Not Modified
  • HTTP caching discipline (Cache-Control, ETag, Last-Modified)
  • Deprecation and sunset headers (Deprecation, Sunset, Link rel="successor-version)"
  • Error handling
  • API security (TLS, authentication, authorization, input validation)
  • API contract: OpenAPI file as source of truth for API-first (OpenAPI Generator)
  • Controller advice and problem details (RFC 7807)

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

Constraints

Before applying any REST API 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
  • VERIFY: Run ./mvnw clean verify or mvn clean verify after applying improvements
  • BEFORE APPLYING: Read the reference for detailed rules and good/bad patterns
  • 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 (131 more words)Show less

When to use this skill

  • Review Java code for Spring Boot REST API
  • Apply best practices for Spring Boot REST API in Java code
  • Design Spring Boot REST controllers and DTOs
  • Add Problem Details error responses in Spring Boot REST
  • Improve pagination validation or idempotency in Spring APIs

Workflow

  1. Read reference and assess project context

Read references/302-frameworks-spring-boot-rest.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/302-frameworks-spring-boot-rest.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/302-frameworks-spring-boot-rest of jabrena/plinth.

  • SKILL.md
  • references/302-frameworks-spring-boot-rest.md

Open the folder on GitHubat commit dca88dc

Compare with similar skills

302 Frameworks Spring Boot REST 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.

302 Frameworks Spring Boot REST compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
302 Frameworks Spring Boot REST this skilljabrena/plinth447—~1kAutomated safety check: PassApache-2.0
Oryxos Initoryx-labs/oryxos186—~1.6kAutomated safety check: PassApache-2.0
Springboot Patternsaffaan-m/ECC276k5 repos~2.5kAutomated safety check: PassMIT
Springboot Init Skilljiushiwon/wg-skills114—~2.2kAutomated safety check: NotesApache-2.0
Spring Boot Openapi Documentationgiuseppe-trisciuoglio/developer-kit356—~2.6kAutomated safety check: NotesMIT
Dr Jskilljdubois/dr-jskill342—~4.6kAutomated safety check: NotesApache-2.0

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Categories

Questions about 302 Frameworks Spring Boot REST

What does 302 Frameworks Spring Boot REST do?

A skill your agent uses when you need to design, review, or improve REST APIs with Spring Boot — including HTTP methods, resource URIs, status codes, DTOs, versioning, deprecation and sunset…. 302 Frameworks Spring Boot REST is an agent skill from jabrena/plinth. Use when you need to design, review, or improve REST APIs with Spring Boot — including HTTP methods, resource URIs, status codes, DTOs, versioning, deprecation and sunset headers, content negotiation (JSON and vendor media types), ISO-8601 instants in DTOs, pagination/sorting/filtering, Bean Validation at the boundary, idempotency, ETag concurrency, HTTP caching, error handling, security, contract-first OpenAPI (OpenAPI Generator), controller advice, and problem details for errors.

When should I use 302 Frameworks Spring Boot REST?

302 Frameworks Spring Boot REST fits situations like: you need to design; improve REST APIs with Spring Boot — including HTTP methods; deprecation and sunset headers; content negotiation (JSON and vendor media types).

How do I install 302 Frameworks Spring Boot REST in Claude Code?

Run `npx skills add jabrena/plinth --skill 302-frameworks-spring-boot-rest -a claude-code`. Or copy the skill folder (skills/302-frameworks-spring-boot-rest in jabrena/plinth) into .claude/skills/302-frameworks-spring-boot-rest in your project. Claude Code loads it when a task matches its description.

How do I install 302 Frameworks Spring Boot REST in Codex?

Run `npx skills add jabrena/plinth --skill 302-frameworks-spring-boot-rest -a codex`. Or copy the skill folder (skills/302-frameworks-spring-boot-rest in jabrena/plinth) into .agents/skills/302-frameworks-spring-boot-rest in your project. Codex loads it when a task matches its description.

Can I use 302 Frameworks Spring Boot REST 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 302-frameworks-spring-boot-rest -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/302-frameworks-spring-boot-rest, .gemini/skills/302-frameworks-spring-boot-rest, .github/skills/302-frameworks-spring-boot-rest and .opencode/skills/302-frameworks-spring-boot-rest in your project.

What does 302 Frameworks Spring Boot REST need to run?

Going by SKILL.md and its folder, 302 Frameworks Spring Boot REST needs the command-line tools its instructions call (mvn).

Does 302 Frameworks Spring Boot REST 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 302 Frameworks Spring Boot REST 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 302 Frameworks Spring Boot REST use?

302 Frameworks Spring Boot REST 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 302 Frameworks Spring Boot REST use?

About 1k tokens (SKILL.md is roughly 4.1k 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 11k tokens, read only when the agent opens those files.

What are the alternatives to 302 Frameworks Spring Boot REST?

Skills that share tags, products or a category with 302 Frameworks Spring Boot REST: Oryxos Init (oryx-labs/oryxos, 186 stars), Springboot Patterns (affaan-m/ECC, 276k stars), Springboot Init Skill (jiushiwon/wg-skills, 114 stars) and Spring Boot Openapi Documentation (giuseppe-trisciuoglio/developer-kit, 356 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains 302 Frameworks Spring Boot REST?

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.