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 kousen/claude-code-training --skill spring-controllergit clone --depth 1 https://github.com/kousen/claude-code-trainingWrote 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/kousen/claude-code-training/spring-controller)<a href="https://agentmods.dev/skills/kousen/claude-code-training/spring-controller"><img src="https://agentmods.dev/badge/skills/kousen/claude-code-training/spring-controller/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/kousen/claude-code-training/spring-controller"><img src="https://agentmods.dev/badge/skills/kousen/claude-code-training/spring-controller.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Tool Misuse · line 21 Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
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 | $0.00034 | $0.00371 |
| Opus 5.5 | $0.00014 | $0.00148 |
| Sonnet 5.5 | $0.00007 | $0.00074 |
| Haiku 4.5 | $0.00003 | $0.00037 |
Grade A, and why
spring-controller 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
Spring REST Controller Scaffold
Generate a $ARGUMENTSController with the following:
@RestControllerand@RequestMapping("/api/$ARGUMENTS")(lowercased plural)- CRUD endpoints with proper HTTP verbs and status codes:
GET /api/$ARGUMENTS— list (with pagination params)GET /api/$ARGUMENTS/{id}— fetch one (404 on miss)POST /api/$ARGUMENTS— create (201 + Location header)PUT /api/$ARGUMENTS/{id}— update (200 or 404)DELETE /api/$ARGUMENTS/{id}— delete (204)
- Request and response DTOs for
$ARGUMENTS(don't expose the JPA entity directly) @Valid+ Jakarta validation annotations on the request DTOs- OpenAPI annotations (
@Operation,@ApiResponses) - Integration tests using
@SpringBootTest+MockMvccovering happy path, validation failure, and 404
Conventions
- Constructor injection (no field
@Autowired) - ResponseEntity return types so HTTP status is explicit
- Use the project's existing exception handler if
@ControllerAdviceis present - Match the package layout of existing controllers
Usage: /spring-controller User → UserController, UserRequest, UserResponse, UserControllerIntegrationTest
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 · 35 lines · 34 tokens per session scan A fb3e93adc738
spring-controller is a skill published in the GitHub repository kousen/claude-code-training (348 stars, last pushed 2d ago), licensed MIT. It adds 34 tokens to every session and 371 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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