# Rust Async > Guide for async and concurrent Rust programming. Use when writing async functions, using tokio, spawning threads, working with channels, or sharing state with Arc/Mutex. Use when this capability is needed. - Skill: `tomevault-io/rust-async-3` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/rust-async-3` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/rust-async-3/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/rust-async-3 --- # Rust Async and Concurrency Async functions, tokio runtime, streams, threads, channels, and shared state. ## When to Use This Skill Activate when: - Writing async functions with tokio - Running concurrent async operations with join! or spawn - Processing async streams - Spawning OS threads - Using channels (mpsc) for message passing - Sharing state with Arc and Mutex For async patterns, concurrency primitives, and shared state examples, see `references/async.md`. --- > Source: [vinnie357/claude-skills](https://github.com/vinnie357/claude-skills) — distributed by [TomeVault](https://tomevault.io).