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 agentmods add rules/wangqiqi/cursor-ai-rules/rust-basics-ownershipgit clone --depth 1 https://github.com/wangqiqi/cursor-ai-rulesWrote 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/wangqiqi/cursor-ai-rules/rust-basics-ownership)<a href="https://agentmods.dev/rules/wangqiqi/cursor-ai-rules/rust-basics-ownership"><img src="https://agentmods.dev/badge/rules/wangqiqi/cursor-ai-rules/rust-basics-ownership.svg" alt="Measured on agentmods" 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 | $0.00330 |
| Opus 5 | $0.00000 | $0.00165 |
| Sonnet 5 | $0.00000 | $0.00066 |
| Haiku 4.5 | $0.00000 | $0.00033 |
Grade A, and why
rust-basics-ownership 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 6d 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
Rust 所有权与生命周期 (Ownership)
本规则由
@rust-basics引用
所有权转移
struct User {
id: u64,
username: String,
email: String,
}
impl User {
fn new(username: String, email: String) -> Self {
Self { id: 0, username, email }
}
fn username(&self) -> &str { &self.username }
fn update_email(&mut self, new_email: String) { self.email = new_email; }
}
引用与生命周期
fn find_user_by_id<'a>(users: &'a [User], id: u64) -> Option<&'a User> {
users.iter().find(|user| user.id == id)
}
struct UserManager<'a> {
database: &'a mut Database,
}
智能指针
use std::rc::Rc;
use std::sync::Arc;
struct AppState {
config: Arc<SharedConfig>,
}
type SharedAppState = Arc<AppState>;
原则
- MUST 优先使用引用避免拷贝
- MUST 用 Arc 跨线程共享
- MUST 明确生命周期参数
引用: @rust-basics
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.
- 6d ago First seen · 63 lines · 0 tokens per session scan A b38b93abfc4f
rust-basics-ownership is a cursor rule published in the GitHub repository wangqiqi/cursor-ai-rules (16 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 330 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 2026-08-30.
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