# Swift Concurrency (agent skill)

> Swift Concurrency is an agent skill (a SKILL.md file) from AvdLee/Swift-Concurrency-Agent-Skill. Diagnose Swift Concurrency issues, refactor callback-based code to async/await, and guide Swift 6 migration when working with tasks, actors, @MainActor, Sendable, data races, thread safety, or. It works with Claude Code, Codex, Cursor and Gemini CLI and has 1,677 GitHub stars.

Diagnose Swift Concurrency issues, refactor callback-based code to async/await, and guide Swift 6 migration when working with tasks, actors, @MainActor, Sendable, data races, thread safety, or concurrency-related compiler and linter warnings. Xcode 26 note: New projects created in Xcode 26 will often start with SWIFTDEFAULTACTORISOLATION = MainActor and SWIFTAPPROACHABLECONCURRENCY = YES enabled by default. Treat these as likely defaults for newly created projects, not as confirmed settings.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/AvdLee/Swift-Concurrency-Agent-Skill |
| Skill path | skills/swift-concurrency/SKILL.md |
| Skill name | swift-concurrency |
| GitHub stars | 1,677 |
| Installs on skills.sh | not listed |
| License | MIT |
| Skills in repo | 1 |
| Plugin marketplace | swift-concurrency-agent-skill |
| Official | no |
| Works with | Claude Code, Codex, Cursor, Gemini CLI |
| Category | Coding |
| Last commit | Sep 14, 2026 |

## Add this skill

### Claude Code

```sh
/plugin marketplace add AvdLee/Swift-Concurrency-Agent-Skill
/plugin install swift-concurrency@swift-concurrency-agent-skill
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/AvdLee/Swift-Concurrency-Agent-Skill.git
cp -r Swift-Concurrency-Agent-Skill/skills/swift-concurrency .agents/skills/swift-concurrency   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/AvdLee/Swift-Concurrency-Agent-Skill.git
cp -r Swift-Concurrency-Agent-Skill/skills/swift-concurrency .cursor/skills/swift-concurrency   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

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Canonical page: https://appsgit.com/skills/avdlee-swift-concurrency
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