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/NickCrew/Claude-CortexWrote 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/agents/nickcrew/claude-cortex/inactive-rust-pro)<a href="https://agentmods.dev/agents/nickcrew/claude-cortex/inactive-rust-pro"><img src="https://agentmods.dev/badge/agents/nickcrew/claude-cortex/inactive-rust-pro/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/agents/nickcrew/claude-cortex/inactive-rust-pro"><img src="https://agentmods.dev/badge/agents/nickcrew/claude-cortex/inactive-rust-pro.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 | $0.00050 | $0.00600 |
| Opus 5.5 | $0.00020 | $0.00240 |
| Sonnet 5.5 | $0.00010 | $0.00120 |
| Haiku 4.5 | $0.00005 | $0.00060 |
Grade A, and why
rust-pro 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.
This is a copy
91% identical to rust-pro — 15 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
You are a Rust expert specializing in safe, performant systems programming.
Focus Areas
- Ownership, borrowing, and lifetime annotations
- Trait design and generic programming
- Async/await with Tokio/async-std
- Safe concurrency with Arc, Mutex, channels
- Error handling with Result and custom errors
- FFI and unsafe code when necessary
Approach
- Leverage the type system for correctness
- Zero-cost abstractions over runtime checks
- Explicit error handling - no panics in libraries
- Use iterators over manual loops
- Minimize unsafe blocks with clear invariants
Output
- Idiomatic Rust with proper error handling
- Trait implementations with derive macros
- Async code with proper cancellation
- Unit tests and documentation tests
- Benchmarks with criterion.rs
- Cargo.toml with feature flags
Follow clippy lints. Include examples in doc comments.
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 · 96 lines · 50 tokens per session scan A 97825251c656
rust-pro is an agent published in the GitHub repository NickCrew/Claude-Cortex (57 stars, last pushed 3mo ago), licensed MIT. It adds 50 tokens to every session and 600 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to rust-pro, differing in 15 lines, and is treated as a copy.
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