Swift Concurrency
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 1,694 GitHub stars.
github.com/AvdLee/Swift-Concurrency-Agent-Skill/skills/swift-concurrency (opens in a new tab)
Data as of from the GitHub API and skills.sh; description from the skill's SKILL.md. Report an error
Add this skill
Claude
This repository is a Claude Code plugin marketplace. In Claude Code:
/plugin marketplace add AvdLee/Swift-Concurrency-Agent-Skill
/plugin install swift-concurrency@swift-concurrency-agent-skillIn the Claude apps, zip the swift-concurrency folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).
ChatGPT / Codex
Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:
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 projectsStandalone skills also load in the ChatGPT desktop app.
Cursor
Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:
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 projectsSource (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)
What this skill does
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.
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How do I install the Swift Concurrency skill?
In Claude Code, run /plugin marketplace add AvdLee/Swift-Concurrency-Agent-Skill and then /plugin install swift-concurrency@swift-concurrency-agent-skill. For Codex or Cursor, copy the swift-concurrency folder into .agents/skills/ or .cursor/skills/.
Is the Swift Concurrency skill free?
Yes. The repository is open source under the MIT license.
Is Swift Concurrency maintained?
The repository's most recent commit was on Sep 14, 2026. Its latest release is 2.3.0. appsgit only lists skills from repositories with a commit in the last six months.