What is quarkus-expert?

A general Quarkus guide for Java applications, covering the framework's reactive programming, dependency injection, build-time processing, databases, security, and cloud operations.

Use it for questions about Mutiny reactive code, CDI dependency injection, database access, development services, virtual threads, health checks, tracing, authentication, and role-based access.

It gives developers framework-specific guidance for choosing patterns and configuring common parts of a Quarkus service.

quarkus-expert — Skill for Claude Code and Codex by kinhluan

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add kinhluan/rules-quarkus-skills --skill quarkus-expert

Clone the repo

git clone --depth 1 https://github.com/kinhluan/rules-quarkus-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/kinhluan/rules-quarkus-skills/quarkus-expert/github.svg)](https://agentmods.dev/skills/kinhluan/rules-quarkus-skills/quarkus-expert)

Your own site

<a href="https://agentmods.dev/skills/kinhluan/rules-quarkus-skills/quarkus-expert"><img src="https://agentmods.dev/badge/skills/kinhluan/rules-quarkus-skills/quarkus-expert/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/kinhluan/rules-quarkus-skills/quarkus-expert"><img src="https://agentmods.dev/badge/skills/kinhluan/rules-quarkus-skills/quarkus-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 834 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00036	$0.00834
Opus 5	$0.00018	$0.00417
Sonnet 5	$0.00007	$0.00167
Haiku 4.5	$0.00004	$0.00083

Measured 11d ago against content hash ead34b45b0be, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

quarkus-expert scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agent-skills/quarkus-expert/SKILL.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

quarkus-expert

Keyword: quarkus | Platforms: gemini,claude,codex

High-Performance Quarkus Framework Expert Skill - Deep production-grade knowledge of the Quarkus ecosystem.

Core Mandates

Build-Time First: Move processing to augmentation phase, minimize runtime classpath scanning
Java 21+ Excellence: Leverage Virtual Threads (@RunOnVirtualThread) for blocking operations
Reactive Discipline: Use Mutiny (Uni, Multi) for non-blocking I/O
Dependency Discipline: Always use Quarkus BOM for version management
Constructor Injection: Mandate constructor injection over field injection

Architectural Patterns

Persistence Strategy

Imperative: Hibernate ORM with Panache (Active Record or Repository pattern)
Reactive: Reactive SQL Clients (MySQL, PostgreSQL, Oracle)
Dev Services: Zero-config databases and brokers during development

Cloud-Native Observability

OpenTelemetry (OTel): Standard for tracing and metrics
Health Checks: Implement Liveness and Readiness probes using MicroProfile Health

Security Architecture

Use Proactive Authentication and RBAC with @RolesAllowed
Prefer OIDC/JWT for stateless microservices

Testing

Integration Testing: Use @QuarkusTest for full-stack tests
Mocking: Utilize @InjectMock and @InjectSpy
Parity: Use Testcontainers via Dev Services

Extension Development

Build-Time (Deployment): Write BuildStep methods for bean registration, bytecode generation
Runtime Init: Differentiate between STATIC_INIT and RUNTIME_INIT

Troubleshooting

ClassLoader Leaks: Monitor custom dynamic class loading
ContextNotActiveException: Ensure CDI contexts propagate correctly with Mutiny
Native Image Failures: Analyze reports and provide reflection-config.json

🌐 Knowledge Sources & Deep Dives

Directive: Use web_fetch to read specific guides if the user's question involves a particular extension (e.g., Hibernate, Kafka, OIDC).

Read the full file on GitHub · 76 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

SKILL.toon 832 B

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

11d ago First seen · 76 lines · 36 tokens per session scan A ead34b45b0be

Subscribe to this mod's changes

quarkus-expert is a skill published in the GitHub repository kinhluan/rules-quarkus-skills (3 stars, last pushed 3mo ago), licensed MIT. It adds 36 tokens to every session and 834 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Backend and APIs Claude Code Java Languages agent-skills ai-agents bazel build-system cdi cloud-native gemini-cli microservices quarkus reactive

senior-java

World-class Java and Spring Boot development skill for enterprise applications, microservices, and cloud-native systems. Expertise in Spring Framework, Spring Boot 3.x, Spring Cloud, JPA/Hibernate, and reactive programming with WebFlux. Includes project scaffolding, dependency management, security implementation, and…

xuansenpa1/skillrevise · 65 tokens

quarkus-expert

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

quarkus-expert

Core Mandates

Architectural Patterns

Persistence Strategy

Cloud-Native Observability

Security Architecture

Testing

Extension Development

Troubleshooting

🌐 Knowledge Sources & Deep Dives

What ships with it

What this file has done since we first saw it

Other skills, from other repositories

senior-java

senior-java

ruoyi-cloud

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spring-boot

java-coding-standards