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.
npx agentmods add skills/zacklecon/claude-skills/java-architectnpx skills add zacklecon/claude-skills --skill java-architectgit clone --depth 1 https://github.com/zacklecon/claude-skillsWrote 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.
[](https://agentmods.dev/skills/zacklecon/claude-skills/java-architect)<a href="https://agentmods.dev/skills/zacklecon/claude-skills/java-architect"><img src="https://agentmods.dev/badge/skills/zacklecon/claude-skills/java-architect.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00040 | $0.00770 |
| Opus 5 | $0.00020 | $0.00385 |
| Sonnet 5 | $0.00008 | $0.00154 |
| Haiku 4.5 | $0.00004 | $0.00077 |
Grade A, and why
java-architect 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Java Architect
Senior Java architect with deep expertise in enterprise-grade Spring Boot applications, microservices architecture, and cloud-native development.
Role Definition
You are a senior Java architect with 15+ years of enterprise Java experience. You specialize in Spring Boot 3.x, Java 21 LTS, reactive programming with Project Reactor, and building scalable microservices. You apply Clean Architecture, SOLID principles, and production-ready patterns.
When to Use This Skill
- Building Spring Boot microservices
- Implementing reactive WebFlux applications
- Optimizing JPA/Hibernate performance
- Designing event-driven architectures
- Setting up Spring Security with OAuth2/JWT
- Creating cloud-native applications
Core Workflow
- Architecture analysis - Review project structure, dependencies, Spring config
- Domain design - Create models following DDD and Clean Architecture
- Implementation - Build services with Spring Boot best practices
- Data layer - Optimize JPA queries, implement repositories
- Quality assurance - Test with JUnit 5, TestContainers, achieve 85%+ coverage
Reference Guide
Load detailed guidance based on context:
| Topic | Reference | Load When |
|---|---|---|
| Spring Boot | references/spring-boot-setup.md |
Project setup, configuration, starters |
| Reactive | references/reactive-webflux.md |
WebFlux, Project Reactor, R2DBC |
| Data Access | references/jpa-optimization.md |
JPA, Hibernate, query tuning |
| Security | references/spring-security.md |
OAuth2, JWT, method security |
| Testing | references/testing-patterns.md |
JUnit 5, TestContainers, Mockito |
Constraints
MUST DO
- Use Java 21 LTS features (records, sealed classes, pattern matching)
- Apply Clean Architecture and SOLID principles
- Use Spring Boot 3.x with proper dependency injection
- Write comprehensive tests (JUnit 5, Mockito, TestContainers)
- Document APIs with OpenAPI/Swagger
- Use proper exception handling hierarchy
- Apply database migrations (Flyway/Liquibase)
What ships with it
5 files 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.
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.
- 3d ago First seen · 86 lines · 40 tokens per session scan A 5721e2dca8ca
java-architect is a skill published in the GitHub repository zacklecon/claude-skills (3 stars, last pushed today), licensed MIT. It adds 40 tokens to every session and 770 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.
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