SkillsBench is a benchmark for measuring how effectively AI agents use modular skills—folders containing instructions, scripts, and resources—to complete specialized tasks. It helps researchers and developers evaluate both skill quality and agent behavior, including tasks that require combining multiple skills. The catalogue’s skills and instructions are evaluated as part of this workflow.
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/benchflow-ai/skillsbench/senior-javanpx skills add benchflow-ai/skillsbench --skill senior-javagit clone --depth 1 https://github.com/benchflow-ai/skillsbenchWrote 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/benchflow-ai/skillsbench/senior-java)<a href="https://agentmods.dev/skills/benchflow-ai/skillsbench/senior-java"><img src="https://agentmods.dev/badge/skills/benchflow-ai/skillsbench/senior-java.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 5.1 | $0.00065 | $0.04459 |
| Opus 5 | $0.00032 | $0.02230 |
| Sonnet 5 | $0.00013 | $0.00892 |
| Haiku 4.5 | $0.00006 | $0.00446 |
Grade A, and why
senior-java 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 2d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- senior-java — 98% identical, 5 lines differ
How it starts
The opening of the file, as written. The whole thing — 581 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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.
Overview
This skill provides production-ready Java and Spring Boot development capabilities through six Python automation tools and comprehensive reference documentation. Whether building enterprise monoliths, microservices architectures, or reactive systems, this skill ensures best practices, scalable architecture, and enterprise-grade security.
What This Skill Provides:
- Spring Boot project scaffolding with layered architecture
- JPA entity and repository generation with optimized queries
- RESTful API endpoint scaffolding with proper error handling
- Spring Security configuration (OAuth2, JWT, RBAC)
- Dependency analysis and upgrade recommendations
- JVM performance profiling and optimization guidance
Use this skill when:
- Starting new Spring Boot projects or microservices
- Implementing JPA/Hibernate data layers
- Designing RESTful APIs with Spring MVC or WebFlux
- Setting up authentication and authorization
- Optimizing JVM and application performance
- Reviewing Java code for quality and patterns
Core Value: Save 60%+ time on project scaffolding while ensuring enterprise-grade architecture, security compliance, and performance optimization.
Core Capabilities
- Spring Boot Scaffolding - Generate production-ready Spring Boot 3.x projects with layered architecture, Docker configuration, and CI/CD pipelines
- Entity Generation - Create JPA entities with repositories, services, controllers, DTOs, and mappers following DDD patterns
- API Development - Scaffold RESTful endpoints with validation, error handling, pagination, and OpenAPI documentation
- Security Implementation - Configure Spring Security with OAuth2, JWT, role-based access control, and security best practices
- Dependency Management - Analyze dependencies for vulnerabilities, outdated versions, and upgrade paths
- Performance Optimization - Profile JVM applications, identify bottlenecks, and generate optimization recommendations
What ships with it
24 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.
- assets/.gitkeep 0 B
- HOW_TO_USE.md 2.3 KB
- references/java-performance-tuning 954 B
- references/java-performance-tuning.md 9.0 KB
- references/jpa-hibernate-guide 950 B
- references/jpa-hibernate-guide.md 12 KB
- references/microservices-patterns 953 B
- references/microservices-patterns.md 11 KB
- references/spring-boot-best-practices 957 B
- references/spring-boot-best-practices.md 15 KB
- references/spring-security-reference 956 B
- references/spring-security-reference.md 14 KB
- scripts/api_endpoint_generator 3.2 KB
- scripts/api_endpoint_generator.py 6.4 KB runs code
- scripts/dependency_analyzer 3.2 KB
- scripts/dependency_analyzer.py 12 KB runs code
- scripts/entity_generator 3.2 KB
- scripts/entity_generator.py 24 KB runs code
- scripts/performance_profiler 3.2 KB
- scripts/performance_profiler.py 12 KB runs code
- scripts/security_config_generator 3.2 KB
- scripts/security_config_generator.py 14 KB runs code
- scripts/spring_project_scaffolder 3.2 KB
- scripts/spring_project_scaffolder.py 37 KB runs code
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.
- 2d ago First seen · 581 lines · 65 tokens per session scan A c22b277c5a72
senior-java is a skill published in the GitHub repository benchflow-ai/skillsbench (1,747 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 65 tokens to every session and 4,459 once invoked, about $0.0003 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 2026-09-03.
Other skills, from other repositories
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…
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…
spring-boot-development
Comprehensive Spring Boot development skill covering auto-configuration, dependency injection, REST APIs, Spring Data, security, and enterprise Java applications.
java-expert
Expert-level Java development with Java 21+ features, Spring Boot, Maven/Gradle, and enterprise best practices. Use when the user mentions JVM, Spring, Maven, Gradle, or enterprise, or when the task involves Modern Java, Spring Boot, Build Tools, or Dependency Injection.
spring-boot
Spring Boot 3.x - Java framework for production-ready applications with dependency injection, REST APIs, data access, security, and actuator monitoring.
ruoyi-cloud
Use when scaffolding Java Spring Cloud microservice backends — Nacos service discovery, Sentinel rate limiting, Seata distributed transactions, Spring Boot 3 + Vue 3 admin. RuoYi-Cloud: popular Chinese Spring Cloud microservice boilerplate framework.