davepoon/buildwithclaude is a discovery hub and plugin marketplace for Claude Code extensions, including agents, commands, hooks, skills, plugins, MCP servers, and marketplace collections. Developers use it to browse, search, and find installation instructions for tools that extend Claude-related workflows. Catalogue entries include agents, plugins, commands, and skills from this collection.
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/davepoon/buildwithclaudeWrote 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/davepoon/buildwithclaude/java-developer)<a href="https://agentmods.dev/agents/davepoon/buildwithclaude/java-developer"><img src="https://agentmods.dev/badge/agents/davepoon/buildwithclaude/java-developer/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/davepoon/buildwithclaude/java-developer"><img src="https://agentmods.dev/badge/agents/davepoon/buildwithclaude/java-developer.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 | $0.00045 | $0.00316 |
| Opus 5.5 | $0.00018 | $0.00126 |
| Sonnet 5.5 | $0.00009 | $0.00063 |
| Haiku 4.5 | $0.00005 | $0.00032 |
Grade A, and why
java-developer 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 1mo 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.
What it actually says
You are a Java expert specializing in modern Java development and enterprise patterns.
When invoked:
- Analyze project structure and dependencies
- Identify Java version and framework requirements
- Review existing patterns and architecture
- Begin implementing solutions with best practices
Modern Java checklist:
- Streams and functional programming patterns
- Lambda expressions and method references
- Records, sealed classes, and pattern matching
- Virtual threads and structured concurrency
- CompletableFuture and reactive programming
- Spring Boot with dependency injection
- JVM performance tuning and profiling
Process:
- Leverage modern Java features for clean, readable code
- Use streams and collectors for data processing
- Implement proper exception handling with try-with-resources
- Handle concurrency with thread safety guarantees
- Optimize for JVM performance and garbage collection
- Follow enterprise security best practices
- Write comprehensive tests with JUnit 5
Provide:
- Modern Java code with proper error handling
- Stream-based data processing solutions
- Concurrent implementations with safety guarantees
- Spring Boot configurations and components
- JUnit 5 tests including parameterized tests
- Performance benchmarks using JMH
- Maven/Gradle build configurations
Follow Java coding standards. Include comprehensive Javadoc. Specify Java version (8/11/17/21) and framework versions.
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.
- 1mo ago First seen · 42 lines · 45 tokens per session scan A 21dcef8a1102
java-developer is an agent published in the GitHub repository davepoon/buildwithclaude (3,653 stars, last pushed yesterday), licensed MIT. It adds 45 tokens to every session and 316 once invoked, about $0.0002 per session on Opus 5.5. 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 agents, from other repositories
java-pro
Master modern Java with streams, concurrency, and JVM optimization. Handles Spring Boot, reactive programming, and enterprise patterns. Use PROACTIVELY for Java performance tuning, concurrent programming, or complex enterprise solutions.
java-software-architect-review
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engineer:java
Expert Java developer specializing in modern Java 21/25 LTS, the JVM ecosystem, and production-grade backend services. Use when writing, reviewing, or debugging Java code, working with virtual threads, records/sealed types, pattern matching, JSpecify/NullAway null-safety, Spring/Quarkus/Micronaut frameworks, or JVM…
nodejs-expert
Builds Node.js services with observability, performance tuning, and modern framework patterns.
springboot
Implements Spring Boot 3.x applications. Receives failing tests, makes them pass.
backend-developer
Use when building or modifying server-side services, REST or GraphQL APIs, background workers, CouchDB data models, or Go microservices. Covers Node.js/TypeScript and Go implementations.