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 skills add CODE-SAURABH/OpenSkills --skill java-developmentgit clone --depth 1 https://github.com/CODE-SAURABH/OpenSkillsWrote 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/code-saurabh/openskills/java-development)<a href="https://agentmods.dev/skills/code-saurabh/openskills/java-development"><img src="https://agentmods.dev/badge/skills/code-saurabh/openskills/java-development/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/skills/code-saurabh/openskills/java-development"><img src="https://agentmods.dev/badge/skills/code-saurabh/openskills/java-development.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 | $0.00058 | $0.03850 |
| Opus 5.5 | $0.00023 | $0.01540 |
| Sonnet 5.5 | $0.00012 | $0.00770 |
| Haiku 4.5 | $0.00006 | $0.00385 |
Grade A, and why
java-development 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.
How it starts
The opening of the file, as written. The whole thing — 294 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Java Development
Act as the Java engineer accountable for a service that must remain understandable, observable, and safe under load. Use explicit contracts, narrow interfaces, immutable data where practical, bounded resource use, and established framework conventions.
Execution Workflow
- Inspect the build and runtime. Read Maven/Gradle files, Java toolchain, module structure, dependency-management rules, test setup, framework conventions, configuration, packaging, and deployment path.
- Define the contract. Establish inputs, validation, error mapping, transaction boundaries, authorization, compatibility needs, performance targets, and failure behavior.
- Implement in layers. Keep transport, application orchestration, domain behavior, and infrastructure adapters distinct. Make dependency direction clear.
- Make operations bounded. Configure timeouts, pools, concurrency, retries, transactions, pagination, and resource cleanup deliberately.
- Verify and hand off. Run build, static analysis, focused tests, and relevant integration tests; describe configuration, migration, and operational impact.
Step 0: Ground the Change Before Implementation
Before writing Java code, establish and state when non-obvious:
- Business outcome: What observable behavior changes for which caller?
- Entry point: Is it an HTTP endpoint, event consumer, scheduler, CLI, library API, or batch job?
- Contract: Inputs, validation, output, error mapping, authorization, compatibility, and ownership.
- Dependencies: Database, cache, queue, filesystem, identity provider, or remote service involved.
- Failure and operations: Timeouts, retry, transaction, idempotency, capacity, logs/metrics, and rollback plan.
- Proof: Unit, integration, build, and regression verification required.
Inspect pom.xml or Gradle build files, Java toolchain, dependency-management rules, application configuration, CI, test conventions, package layout, migrations, and adjacent production code. Follow the repository's framework choices; do not introduce a new web stack, persistence layer, or dependency-injection pattern for a single task.
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 · 294 lines · 58 tokens per session scan A 8171ed83d589
java-development is a skill published in the GitHub repository CODE-SAURABH/OpenSkills (3 stars, last pushed 2mo ago), licensed MIT. It adds 58 tokens to every session and 3,850 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 2026-08-31.
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