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quarkus-debug

quarkus-debug is a skill for Claude Code, Codex from kinhluan/rules-quarkus-skills. It costs 43 tokens per session (1,526 once invoked), scanned A, original, MIT.

A debugging guide for Quarkus, a Java framework for building cloud applications, including its development mode, reactive code, and native executables.

In plain words
What is it for?
Use it to investigate live reload, dependency injection, configuration, background tests, event-loop blocking, remote debugging, and differences between JVM and native builds.
Why use it?
It helps separate problems caused during development, application startup, build-time processing, or native compilation, where the fixes differ.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Codex.

not rated 3repo 3mo ago A scan 43 tokens original MIT

Good fit Use it to investigate live reload, dependency injection, configuration, background tests, event-loop blocking, remote debugging, and differences between JVM and native builds.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kinhluan/rules-quarkus-skills/quarkus-debug
View source ↗ kinhluan/rules-quarkus-skills
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-debug
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.

agentmods badge for quarkus-debug

README.md
[![agentmods](https://agentmods.dev/badge/skills/kinhluan/rules-quarkus-skills/quarkus-debug/github.svg)](https://agentmods.dev/skills/kinhluan/rules-quarkus-skills/quarkus-debug)
Your own site
<a href="https://agentmods.dev/skills/kinhluan/rules-quarkus-skills/quarkus-debug"><img src="https://agentmods.dev/badge/skills/kinhluan/rules-quarkus-skills/quarkus-debug/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.

agentmods 80×15 button for quarkus-debug

Your own site · 80×15
<a href="https://agentmods.dev/skills/kinhluan/rules-quarkus-skills/quarkus-debug"><img src="https://agentmods.dev/badge/skills/kinhluan/rules-quarkus-skills/quarkus-debug.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,526 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00043 $0.01526
Opus 5 $0.00022 $0.00763
Sonnet 5 $0.00009 $0.00305
Haiku 4.5 $0.00004 $0.00153

Measured 10d ago against content hash 444957bcf362, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

quarkus-debug 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 10d 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-debug/SKILL.md · 105 lines

How it starts

The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.

quarkus-debug

Keyword: quarkus-debug | Platforms: gemini,claude,codex

Expert AI Agent Skill for Quarkus Debugging - Advanced techniques for diagnosing and fixing issues across the entire Quarkus lifecycle, from development mode to native executables.

Core Mandates

  • Dev Mode First: Always leverage quarkus:dev for immediate feedback and live reload.
  • Context-Aware Debugging: Distinguish between Imperative (Blocking) and Reactive (Event Loop) contexts.
  • Binary Parity: Ensure behavior consistency between JVM mode and Native Image mode.
  • Augmentation Insight: Distinguish between build-time (deployment) and run-time errors.
  • No-Block Rule: Never block the Event Loop during debugging unless using specific thread-aware tools.

🛠 Debugging Domains

1. Development Phase (Dev Mode)

  • JPDA/Remote Debug: Default port 5005. Use quarkus.debug.host and quarkus.debug.port to customize.
  • Dev UI (/q/dev):
    • Inspect CDI Beans, Configuration, and Extension status.
    • Use the Arc extension UI to debug dependency injection issues.
    • Continuous Testing: Debug tests as they run in the background.
  • Hot Reload Issues: If changes don't reflect, check quarkus.live-reload.password or ClassLoader isolation settings.

2. Reactive & Asynchronous (Mutiny)

  • Stack Trace Unwrapping: Reactive stack traces are often unhelpful. Use .onFailure().invoke(Throwable::printStackTrace) or Mutiny's infrastructure tools.
  • Context Propagation:
    • Debug ContextNotActiveException by ensuring DuplicatedContext is propagated correctly.
    • Use quarkus.arc.context-propagation.enabled=true.
  • Event Loop Blocking: Enable quarkus.vertx.warning-exception-time to detect long-running tasks blocking the Event Loop.
  • Mutiny Infrastructure: Use Infrastructure.setCanClearThreadLocals(false) carefully to debug ThreadLocal issues.

3. Native Executables (GraalVM AOT)

  • AOT Issues: Most native errors are due to Reflection, Resources, or Dynamic Proxies missing from reflect-config.json.
  • GraalVM Agent: Run in JVM mode with the agent to auto-generate configs: 
    java -agentlib:native-image-agent=config-output-dir=./config -jar target/*-runner.jar
  • Native Debugging: Build with -H:GenerateDebugInfo=1 and use GDB or LLDB.
  • Static vs Runtime Init: Debug InitializerError by checking quarkus.native.additional-build-args=--trace-class-initialization=....

Read the full file on GitHub · 105 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.

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.

  1. 10d ago First seen · 105 lines · 43 tokens per session scan A 444957bcf362

Subscribe to this mod's changes

quarkus-debug is a skill published in the GitHub repository kinhluan/rules-quarkus-skills (3 stars, last pushed 3mo ago), licensed MIT. It adds 43 tokens to every session and 1,526 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.

DebuggingJavaLanguagesagent-skillsai-agentsaugmentationdebuggdbjpdalldbmutinynative-imagequarkusreactivetroubleshooting
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