Borrowing it
Nothing to install: this file belongs to InterCooperative-Network/icn. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/InterCooperative-Network/icn/main/.claude/agents/icn-rust-core.mdgit clone --depth 1 https://github.com/InterCooperative-Network/icnWrote 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/intercooperative-network/icn/icn-rust-core)<a href="https://agentmods.dev/agents/intercooperative-network/icn/icn-rust-core"><img src="https://agentmods.dev/badge/agents/intercooperative-network/icn/icn-rust-core/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/intercooperative-network/icn/icn-rust-core"><img src="https://agentmods.dev/badge/agents/intercooperative-network/icn/icn-rust-core.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 | $0.00048 | $0.00990 |
| Opus 5.5 | $0.00019 | $0.00396 |
| Sonnet 5.5 | $0.00010 | $0.00198 |
| Haiku 4.5 | $0.00005 | $0.00099 |
Grade A, and why
icn-rust-core 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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 · 146 lines · 48 tokens per session scan A b4f14cdad683
icn-rust-core is an agent published in the GitHub repository InterCooperative-Network/icn (10 stars, last pushed today), licensed AGPL-3.0. It adds 48 tokens to every session and 990 once invoked, about $0.0002 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 2026-08-31.
Other agents, from other repositories
engineer:rust
Expert Rust developer specializing in systems programming, memory safety, and zero-cost abstractions. Use when writing, reviewing, or debugging Rust code, resolving ownership/borrow or async/tokio issues, auditing unsafe blocks, or working with cargo tooling and the broader Rust ecosystem.
ciel-systems-guild
CIEL's elite systems engineering guild. Specializes in Rust, C++, Go, Elixir, and high-performance architecture.
rust-pro
Master Rust 1.75+ with modern async patterns, advanced type system features, and production-ready systems programming. Expert in the latest Rust ecosystem including Tokio, axum, and cutting-edge crates. Use PROACTIVELY for Rust development, performance optimization, or systems programming.
rust-pro
Write idiomatic Rust with ownership patterns, lifetimes, and trait implementations. Masters async/await, safe concurrency, and zero-cost abstractions. Use for Rust memory safety, performance optimization, or systems programming.
cicd-devops
CI/CD and DevOps engineer for Rust and TypeScript projects, specializing in GitHub Actions, cross-platform testing, code coverage, caching strategies, release automation, and efficient workflows. Applies the project's language rules from the stack profile. Use PROACTIVELY when setting up CI/CD pipelines, fixing…
performance-engineer
Performance optimization specialist for Rust and TypeScript projects — CPU and memory profiling, flamegraphs, benchmarking, async and event-loop tuning, bundle size, and build-speed improvements. Applies the project's language rules from the stack profile. Use when performance concerns are mentioned, slow code is…