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/movebrickschi/harness-engineering-mcpWrote 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/rules/movebrickschi/harness-engineering-mcp/07-solid-code-quality)<a href="https://agentmods.dev/rules/movebrickschi/harness-engineering-mcp/07-solid-code-quality"><img src="https://agentmods.dev/badge/rules/movebrickschi/harness-engineering-mcp/07-solid-code-quality/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/rules/movebrickschi/harness-engineering-mcp/07-solid-code-quality"><img src="https://agentmods.dev/badge/rules/movebrickschi/harness-engineering-mcp/07-solid-code-quality.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 | $0.00000 | $0.00441 |
| Opus 5.5 | $0.00000 | $0.00176 |
| Sonnet 5.5 | $0.00000 | $0.00088 |
| Haiku 4.5 | $0.00000 | $0.00044 |
Grade A, and why
07-solid-code-quality 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
SOLID原则与防御式编程
SOLID原则
| 原则 | 规则 | 告警阈值 |
|---|---|---|
| 单一职责(SRP) | 类变更理由只能有一个 | 类超过200行必须拆分 |
| 开闭原则(OCP) | 对扩展开放，使用SPI或Conditional Bean | 禁止修改已稳定的核心逻辑 |
| 里氏替换(LSP) | 子类增强而非改变父类行为 | 禁止继承仅为复用代码 |
| 接口隔离(ISP) | 接口方法不超过5个 | 拆分为Role Interface |
| 依赖倒置(DIP) | Spring注入必须面向接口 | 禁止注入具体实现类 |
防御式编程
空值防御
// ✅ 使用Optional
public Optional<User> findByEmail(String email) { }
// ✅ 使用@NonNull注解
public void process(@NonNull Order order) { }
// ❌ 禁止裸返回null
public User findByEmail(String email) { return null; }
输入验证
- Controller层：Bean Validation（
@Valid,@NotBlank,@Size等） - Domain层：Guard Clauses（方法入口处校验前置条件）
资源释放
// ✅ 必须使用try-with-resources
try (InputStream is = new FileInputStream(file)) {
// ...
}
// ❌ 禁止手动close()
InputStream is = new FileInputStream(file);
try { /* ... */ } finally { is.close(); }
并发安全
- 可变共享状态必须使用ThreadLocal或并发容器
- 优先使用不可变对象（
final字段） - 避免在Spring单例Bean中使用实例变量存储请求状态
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 · 57 lines · 441 tokens per session scan A 70ff90cec6c9
07-solid-code-quality is a cursor rule published in the GitHub repository movebrickschi/harness-engineering-mcp (2 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 441 tokens. 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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