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 Taoidle/plan-cascade --skill javagit clone --depth 1 https://github.com/Taoidle/plan-cascadeWrote 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/taoidle/plan-cascade/java)<a href="https://agentmods.dev/skills/taoidle/plan-cascade/java"><img src="https://agentmods.dev/badge/skills/taoidle/plan-cascade/java/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/taoidle/plan-cascade/java"><img src="https://agentmods.dev/badge/skills/taoidle/plan-cascade/java.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 | $0.00032 | $0.00499 |
| Opus 5.5 | $0.00013 | $0.00200 |
| Sonnet 5.5 | $0.00006 | $0.00100 |
| Haiku 4.5 | $0.00003 | $0.00050 |
Grade A, and why
java-best-practices 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
Java Best Practices (17+)
Code Style
| Rule | Guideline |
|---|---|
| Formatter | google-java-format |
| Analysis | SpotBugs, Error Prone |
| Naming | Clear, no abbreviations |
Modern Features
| Feature | Usage |
|---|---|
| Records | Immutable data carriers |
| Sealed classes | Restricted hierarchies |
| Pattern matching | instanceof with binding |
var |
Local type inference |
public record User(String id, String name) {}
if (obj instanceof String s && !s.isEmpty()) { process(s); }
public sealed interface Result<T> permits Success, Failure {}
record Success<T>(T value) implements Result<T> {}
record Failure<T>(Exception error) implements Result<T> {}
Error Handling
| Rule | Guideline |
|---|---|
| Specific exceptions | Not bare Exception |
| Try-with-resources | For AutoCloseable |
try (var reader = new BufferedReader(new FileReader(path))) {
return reader.lines().toList();
} catch (IOException e) {
throw new ConfigException("Failed: " + path, e);
}
Project Structure
src/main/java/com/example/{domain,service}/
src/test/java/
pom.xml or build.gradle
Common Patterns
| Pattern | Usage |
|---|---|
| Optional | Null-safe returns |
| Stream API | Functional collections |
| Builder | Complex construction |
public Optional<User> findById(String id) {
return Optional.ofNullable(users.get(id));
}
Anti-Patterns
| Avoid | Use Instead |
|---|---|
| Returning null | Optional<T> |
| Mutable data | Records |
instanceof chains |
Pattern matching |
Testing (JUnit 5 + AssertJ)
@Test void shouldProcess() {
var service = new Service(mockRepo);
var result = service.process(input);
assertThat(result.status()).isEqualTo(SUCCESS);
}
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 · 93 lines · 32 tokens per session scan A d79ec7988744
java-best-practices is a skill published in the GitHub repository Taoidle/plan-cascade (133 stars, last pushed 7mo ago), licensed MIT. It adds 32 tokens to every session and 499 once invoked, about $0.0001 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 2026-08-30.
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