# Maverick Rust Async

> Rust async/await with Tokio and async patterns Use when this capability is needed.

- Skill: `tomevault-io/maverick-rust-async` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/maverick-rust-async`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/maverick-rust-async/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/maverick-rust-async

---


# Rust Async Skill

## Tokio Basics
```rust
#[tokio::main]
async fn main() {
    let result = fetch_data().await;
}

async fn fetch_data() -> Result<String, Error> {
    // async operation
}
```

## Spawning Tasks
```rust
let handle = tokio::spawn(async move {
    expensive_operation().await
});

let result = handle.await?;
```

## Send + Sync Bounds
- `Send`: Can transfer across thread boundaries
- `Sync`: Can be shared across threads (&T is Send)
- Use `Arc` instead of `Rc` for thread-safe reference counting

## Review Severity
- **CRITICAL**: Blocking calls in async functions
- **MAJOR**: Using Rc in async code (not Send)
- **MINOR**: Not using async context managers

---
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<!-- tomevault:4.0:skill_md:2026-04-15 -->