Agent skill

Problem Details Rfc9457

by rrezartprebreza in rrezartprebreza/spring-boot-skills

A skill your agent uses when implementing exception mapping or RFC 9457 error responses in Spring Boot 3.

Install Problem Details Rfc9457

skills CLI

$ npx skills add rrezartprebreza/spring-boot-skills --skill problem-details-rfc9457 -a claude-code

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

GitHub CLI

$ gh skill install rrezartprebreza/spring-boot-skills problem-details-rfc9457 --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/rrezartprebreza/spring-boot-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/spring-boot-3/problem-details-rfc9457 .claude/skills/problem-details-rfc9457 && 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/

Paste into Claude Code

Install the "problem-details-rfc9457" agent skill from https://github.com/rrezartprebreza/spring-boot-skills/tree/main/skills/spring-boot-3/problem-details-rfc9457 into .claude/skills/problem-details-rfc9457/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "problem-details-rfc9457", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/rrezartprebreza/spring-boot-skills/tree/main/skills/spring-boot-3/problem-details-rfc9457

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add rrezartprebreza/spring-boot-skills --skill problem-details-rfc9457 -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install rrezartprebreza/spring-boot-skills problem-details-rfc9457 --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rrezartprebreza/spring-boot-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/spring-boot-3/problem-details-rfc9457 .agents/skills/problem-details-rfc9457 && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "problem-details-rfc9457" agent skill from https://github.com/rrezartprebreza/spring-boot-skills/tree/main/skills/spring-boot-3/problem-details-rfc9457 into .agents/skills/problem-details-rfc9457/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "problem-details-rfc9457", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add rrezartprebreza/spring-boot-skills --skill problem-details-rfc9457 -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install rrezartprebreza/spring-boot-skills problem-details-rfc9457 --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rrezartprebreza/spring-boot-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/spring-boot-3/problem-details-rfc9457 .cursor/skills/problem-details-rfc9457 && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "problem-details-rfc9457" agent skill from https://github.com/rrezartprebreza/spring-boot-skills/tree/main/skills/spring-boot-3/problem-details-rfc9457 into .cursor/skills/problem-details-rfc9457/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "problem-details-rfc9457", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/rrezartprebreza/spring-boot-skills.git --path skills/spring-boot-3/problem-details-rfc9457

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add rrezartprebreza/spring-boot-skills --skill problem-details-rfc9457 -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install rrezartprebreza/spring-boot-skills problem-details-rfc9457 --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rrezartprebreza/spring-boot-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/spring-boot-3/problem-details-rfc9457 .gemini/skills/problem-details-rfc9457 && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "problem-details-rfc9457" agent skill from https://github.com/rrezartprebreza/spring-boot-skills/tree/main/skills/spring-boot-3/problem-details-rfc9457 into .gemini/skills/problem-details-rfc9457/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "problem-details-rfc9457", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install rrezartprebreza/spring-boot-skills problem-details-rfc9457

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add rrezartprebreza/spring-boot-skills --skill problem-details-rfc9457 -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/rrezartprebreza/spring-boot-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/spring-boot-3/problem-details-rfc9457 .github/skills/problem-details-rfc9457 && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "problem-details-rfc9457" agent skill from https://github.com/rrezartprebreza/spring-boot-skills/tree/main/skills/spring-boot-3/problem-details-rfc9457 into .github/skills/problem-details-rfc9457/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "problem-details-rfc9457", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add rrezartprebreza/spring-boot-skills --skill problem-details-rfc9457 -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install rrezartprebreza/spring-boot-skills problem-details-rfc9457 --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rrezartprebreza/spring-boot-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/spring-boot-3/problem-details-rfc9457 .opencode/skills/problem-details-rfc9457 && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "problem-details-rfc9457" agent skill from https://github.com/rrezartprebreza/spring-boot-skills/tree/main/skills/spring-boot-3/problem-details-rfc9457 into .opencode/skills/problem-details-rfc9457/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "problem-details-rfc9457", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: problem-details-rfc9457
GitHub stars: 301
Token cost: ~979 tokens
SKILL.md length: 401 words
Files: 9
Skills in repo: 51
Repo updated: Sep 21, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

A skill your agent uses when implementing exception mapping or RFC 9457 error responses in Spring Boot 3.

Implementing exception mapping
SKILL.md covers Choose the error contract, Domain errors, Response fields and Verification, plus 2 more sections
Runs Java scripts from its folder
RFC 9457 error responses in Spring Boot 3

What it does

Problem Details Rfc9457 is an agent skill from rrezartprebreza/spring-boot-skills. Use when implementing exception mapping or RFC 9457 error responses in Spring Boot 3. Preserve an existing legacy error contract unless migration is requested.

Its SKILL.md is about 980 tokens, which your agent loads only when the skill is triggered. The skill folder holds 11 other files (for example `agents/openai.yaml`).

It sits in Backend & APIs, covering Backend development. It works with Spring Boot and Java. The repository describes itself as: Production-grade Claude Code and Codex skills for Spring Boot developers. The licence is MIT.

When your agent uses it

Implementing exception mapping
RFC 9457 error responses in Spring Boot 3

Example prompts

“/problem-details-rfc9457”

What it can do on your machine

Read from SKILL.md and the folder at commit f0c06a0. 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
Ships script files (Java), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- rfc-editor.org
- docs.spring.io
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

Problem Details Rfc9457 loads about 979 tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 401 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~46
When it runs · the whole SKILL.md, loaded when a task matches: ~979

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 rrezartprebreza/spring-boot-skills at commit f0c06a0, republished under its MIT licence (© rrezartprebreza). 401 words, ~979 tokens.

Download SKILL.mdSave it as .claude/skills/problem-details-rfc9457/SKILL.md (or your agent's skills folder). This skill also uses 8 other files; get the full folder from GitHub.

name: problem-details-rfc9457
description: Use when implementing exception mapping or RFC 9457 error responses in Spring Boot 3. Preserve an existing legacy error contract unless migration is requested.

Problem Details - RFC 9457

Choose the error contract

Inspect existing advice, security entry points and API tests first. Keep one error policy per API. Success DTOs or success envelopes can coexist with Problem Details errors: RFC 9457 specifies errors, not success representations.

For an API using Problem Details, enable Spring's built-in MVC exception handling:

yaml

spring:
  mvc:
    problemdetails:
      enabled: true

For WebFlux use spring.webflux.problemdetails.enabled and reactive exception handling; the servlet templates below are not WebFlux handlers.

Domain errors

Use the compiled DomainException together with ProblemDetailExceptionHandler. The handler maps all subclasses using their declared status and stable error code:

Each public class has its own file. These are API-facing exceptions with HTTP status metadata; for a framework-free domain, keep domain exceptions independent and map them in the web adapter. Do not expose arbitrary persistence or infrastructure exception messages.

The advice extends ResponseEntityExceptionHandler to preserve Spring's handling of framework exceptions. Validation returns 400 with field violations; unexpected failures return a generic 500 while retaining the full exception only in server logs. Keep nullable validation messages safe. Filter-level authentication failures need an AuthenticationEntryPoint; authorization failures need an AccessDeniedHandler. Controller advice does not cover the security filter chain.

Response fields

json

{
  "type": "https://api.example.com/errors/order_not_found",
  "title": "Not Found",
  "status": 404,
  "detail": "Order not found",
  "instance": "/api/orders/123",
  "errorCode": "ORDER_NOT_FOUND"
}

Use project-owned, stable URIs for custom problem types. An explicit type is optional; when omitted it defaults to about:blank. Its title should then match the HTTP status phrase. The HTTP status and the body status must agree. Use application/problem+json for JSON problems. Use extensions such as errorCode or violations for machine-readable details instead of requiring clients to parse human-readable messages.

Show full SKILL.md (145 more words)Show less

Verification

Test actual HTTP responses for domain 404/422, validation 400, unexpected 500, and framework errors such as malformed JSON and unsupported methods. Assert content type, status, stable error codes and absence of stack traces or internal messages. Separately test filter 401/403. The repository verification fixture imports these exact templates for both Boot versions.

Official sources

Gotchas

Agent handles a different exception class than the domain throws - test the concrete exceptions.
Agent forces Problem Details into an existing legacy API - preserve its contract unless asked to migrate.
Agent requires an explicit type for every error - about:blank is the default.
Agent treats success envelopes and Problem Details as incompatible - only error policy must be consistent.
Agent relies on advice for filter exceptions - configure the security handlers separately.
Agent returns internal exception messages in 500 responses - log privately and return generic detail.

Files

SKILL.md and 8 other files in skills/spring-boot-3/problem-details-rfc9457 of rrezartprebreza/spring-boot-skills.

SKILL.md
agents/openai.yaml
examples/bad-exception-handler.java
examples/good-exception-handler.java
templates/BusinessRuleViolationException.java
templates/DomainException.java
templates/InsufficientInventoryException.java
templates/OrderNotFoundException.java
templates/ProblemDetailExceptionHandler.java

Open the folder on GitHubat commit f0c06a0

Compare with similar skills

Problem Details Rfc9457 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.

Problem Details Rfc9457 compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Problem Details Rfc9457 this skillrrezartprebreza/spring-boot-skills	301	—	~979	Automated safety check: Pass	MIT	19 days ago
Spring Bootpiomin/claude-ai-spring-boot	1.3k	—	~2k	Automated safety check: Pass	Apache-2.0	5 mo ago
Dr Jskilljdubois/dr-jskill	342	—	~4.6k	Automated safety check: Notes	Apache-2.0	11 days ago
WxJava Integration Guidebinarywang/WxJava	33k	—	~123	Automated safety check: Pass	Apache-2.0	yesterday
Flycms Devsunkaifei/FlyCms	656	—	~827	Automated safety check: Pass	MIT	2 days ago
Intelliconnect Service Styleruanrongman/IntelliConnect	147	—	~2.4k	Automated safety check: Pass	Apache-2.0	3 days ago

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Works with

Questions about Problem Details Rfc9457

What does Problem Details Rfc9457 do?

A skill your agent uses when implementing exception mapping or RFC 9457 error responses in Spring Boot 3. Problem Details Rfc9457 is an agent skill from rrezartprebreza/spring-boot-skills. Use when implementing exception mapping or RFC 9457 error responses in Spring Boot 3.

When should I use Problem Details Rfc9457?

Problem Details Rfc9457 fits situations like: implementing exception mapping; RFC 9457 error responses in Spring Boot 3.

How do I install Problem Details Rfc9457 in Claude Code?

Run `npx skills add rrezartprebreza/spring-boot-skills --skill problem-details-rfc9457 -a claude-code`. Or copy the skill folder (skills/spring-boot-3/problem-details-rfc9457 in rrezartprebreza/spring-boot-skills) into .claude/skills/problem-details-rfc9457 in your project. Claude Code loads it when a task matches its description.

How do I install Problem Details Rfc9457 in Codex?

Run `npx skills add rrezartprebreza/spring-boot-skills --skill problem-details-rfc9457 -a codex`. Or copy the skill folder (skills/spring-boot-3/problem-details-rfc9457 in rrezartprebreza/spring-boot-skills) into .agents/skills/problem-details-rfc9457 in your project. Codex loads it when a task matches its description.

Can I use Problem Details Rfc9457 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 rrezartprebreza/spring-boot-skills --skill problem-details-rfc9457 -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/problem-details-rfc9457, .gemini/skills/problem-details-rfc9457, .github/skills/problem-details-rfc9457 and .opencode/skills/problem-details-rfc9457 in your project.

What does Problem Details Rfc9457 need to run?

Going by SKILL.md and its folder, Problem Details Rfc9457 needs Java for the scripts in its folder.

Does Problem Details Rfc9457 access the network?

SKILL.md names 2 domains. As links in the text: rfc-editor.org and docs.spring.io. This is read from the text; nothing was executed.

Is Problem Details Rfc9457 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 Problem Details Rfc9457 use?

Problem Details Rfc9457 is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Problem Details Rfc9457 use?

About 979 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.

What are the alternatives to Problem Details Rfc9457?

Skills that share tags, products or a category with Problem Details Rfc9457: 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 Problem Details Rfc9457?

rrezartprebreza (a GitHub user) maintains it in rrezartprebreza/spring-boot-skills, which has 301 GitHub stars. The repository holds 51 skills in this directory. The repository was last updated on September 21, 2026.

Source: rrezartprebreza/spring-boot-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Problem Details Rfc9457

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Problem Details - RFC 9457

Choose the error contract

Domain errors

Response fields

Verification

Official sources

Gotchas

Files

Compare with similar skills

Similar skills

More from rrezartprebreza/spring-boot-skills

Related

Questions about Problem Details Rfc9457