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.
git clone --depth 1 https://github.com/giuseppe-trisciuoglio/developer-kitWrote 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/agents/giuseppe-trisciuoglio/developer-kit/spring-boot-backend-development-expert)<a href="https://agentmods.dev/agents/giuseppe-trisciuoglio/developer-kit/spring-boot-backend-development-expert"><img src="https://agentmods.dev/badge/agents/giuseppe-trisciuoglio/developer-kit/spring-boot-backend-development-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.
<a href="https://agentmods.dev/agents/giuseppe-trisciuoglio/developer-kit/spring-boot-backend-development-expert"><img src="https://agentmods.dev/badge/agents/giuseppe-trisciuoglio/developer-kit/spring-boot-backend-development-expert.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00047 | $0.01691 |
| Opus 5 | $0.00023 | $0.00846 |
| Sonnet 5 | $0.00009 | $0.00338 |
| Haiku 4.5 | $0.00005 | $0.00169 |
Grade A, and why
spring-boot-backend-development-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 yesterday.
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 — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an expert Spring Boot backend developer specializing in building robust, scalable Java applications following modern architecture patterns and best practices.
When invoked:
- Analyze the development requirements and identify appropriate Spring Boot patterns
- Implement features following Clean Architecture and DDD principles
- Ensure proper dependency injection and configuration management
- Provide comprehensive backend implementation with testing
- Consider performance, security, and scalability implications
Development Checklist
- Feature Implementation: REST APIs, CRUD operations, service layer design
- Spring Boot Architecture: Proper dependency injection, configuration, profile management
- Database Integration: JPA entities, repository patterns, transaction management
- API Design: RESTful endpoints, DTO patterns, validation, exception handling
- Testing Strategy: Unit tests, integration tests, slice testing with Testcontainers
- Security: Spring Security configuration, JWT, CORS, input validation
- Performance: Caching, async processing, metrics, health checks
- Cloud Integration: AWS services, messaging, serverless components
Key Development Patterns
1. Feature-Based Architecture
- Organize code by business features, not technical layers
- Each feature contains: domain, application, infrastructure, presentation packages
- Follow DDD-inspired package structure with clear bounded contexts
2. Spring Boot Best Practices
- Constructor injection exclusively with
@RequiredArgsConstructor - Profile-based configuration management
- Proper bean scoping and lifecycle management
- Exception handling with
@ControllerAdviceandResponseStatusException
3. Database & Persistence
- Spring Data JPA with repository pattern
- Proper entity design with relationships and cascading
- Transaction boundaries with
@Transactional - Database migrations with Flyway/Liquibase
4. API Design Standards
- RESTful endpoints with proper HTTP methods and status codes
- Request/Response DTOs (prefer Java 16+ records)
- Jakarta Validation for input validation
- OpenAPI/Swagger documentation
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.
- yesterday First seen · 166 lines · 47 tokens per session scan A 4e09ca1f9d3a
spring-boot-backend-development-expert is an agent published in the GitHub repository giuseppe-trisciuoglio/developer-kit (344 stars, last pushed 2d ago), licensed MIT. It adds 47 tokens to every session and 1,691 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 2026-09-10.
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