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/tyrchen/cursor-rust-rules/dependenciesgit clone --depth 1 https://github.com/tyrchen/cursor-rust-rulesWhat 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 | $0.00000 | $0.02588 |
| Opus 5 | $0.00000 | $0.01294 |
| Sonnet 5 | $0.00000 | $0.00518 |
| Haiku 4.5 | $0.00000 | $0.00259 |
Grade A, and why
dependencies 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 2d 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 — 349 lines — stays where its author put it; the contents beside it link to each section on GitHub.
📦 RUST DEPENDENCY MANAGEMENT
TL;DR: Centralized dependency management guidelines for consistent, secure, and maintainable Rust projects.
🔍 DEPENDENCY MANAGEMENT STRATEGY
graph TD
Start["Project Setup"] --> WorkspaceCheck{"Workspace<br>Project?"}
WorkspaceCheck -->|Yes| WorkspaceRoot["Use Workspace Dependencies"]
WorkspaceCheck -->|No| SingleCrate["Single Crate Dependencies"]
WorkspaceRoot --> WorkspaceTable["[workspace.dependencies]<br>Define versions centrally"]
SingleCrate --> DirectDeps["[dependencies]<br>Direct version specification"]
WorkspaceTable --> CrateUsage["[dependencies]<br>crate = { workspace = true }"]
CrateUsage --> SecurityCheck["Security Assessment"]
DirectDeps --> SecurityCheck
SecurityCheck --> Audit["cargo audit"]
Audit --> Outdated["cargo outdated"]
Outdated --> VersionPin["Pin Critical Versions"]
VersionPin --> FeatureGates["Feature Gate Optional Deps"]
FeatureGates --> Testing["Testing Dependencies"]
Testing --> Documentation["Document Choices"]
style Start fill:#4da6ff,stroke:#0066cc,color:white
style WorkspaceRoot fill:#4dbb5f,stroke:#36873f,color:white
style SingleCrate fill:#ffa64d,stroke:#cc7a30,color:white
style SecurityCheck fill:#d94dbb,stroke:#a3378a,color:white
🎯 DEPENDENCY STRATEGY
Workspace Dependencies Priority
# Always prefer workspace dependencies first
[dependencies]
tokio = { workspace = true }
serde = { workspace = true, features = ["derive"] }
# Only add new dependencies if not available in workspace
# Request permission before modifying Cargo.toml
📋 STANDARD CRATE RECOMMENDATIONS
Core Utilities
# Error handling
anyhow = "1.0" # Simple error handling
thiserror = "2.0" # Structured error types
derive_more = { version = "2", features = ["full"] } # Extended derive macros
# Data structures
typed-builder = "0.21" # Builder pattern
uuid = { version = "1.17", features = ["v4", "v7", "serde"] }
chrono = { version = "0.4", features = ["serde"] }
time = { version = "0.3", features = ["serde"] }
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.
- 2d ago First seen · 349 lines · 0 tokens per session scan A 58f4352d543a
dependencies is a cursor rule published in the GitHub repository tyrchen/cursor-rust-rules (27 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,588 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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