Swift Concurrency
AFK-surf/OpenBridge
Expert guidance on Swift Concurrency best practices, patterns, and implementation.
Diagnose data races, convert callback-based code to async/await, implement actor isolation patterns, resolve Sendable conformance issues, and guide Swift 6 migration.
Install Swift Concurrency
$ npx skills add supabitapp/supaterm --skill swift-concurrency -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install supabitapp/supaterm swift-concurrency --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/supabitapp/supaterm.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/swift-concurrency .claude/skills/swift-concurrency && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "swift-concurrency" agent skill from https://github.com/supabitapp/supaterm/tree/main/.agents/skills/swift-concurrency into .claude/skills/swift-concurrency/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/supabitapp/supaterm/tree/main/.agents/skills/swift-concurrencyType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add supabitapp/supaterm --skill swift-concurrency -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install supabitapp/supaterm swift-concurrency --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/supabitapp/supaterm.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/swift-concurrency .agents/skills/swift-concurrency && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "swift-concurrency" agent skill from https://github.com/supabitapp/supaterm/tree/main/.agents/skills/swift-concurrency into .agents/skills/swift-concurrency/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add supabitapp/supaterm --skill swift-concurrency -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install supabitapp/supaterm swift-concurrency --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/supabitapp/supaterm.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/swift-concurrency .cursor/skills/swift-concurrency && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "swift-concurrency" agent skill from https://github.com/supabitapp/supaterm/tree/main/.agents/skills/swift-concurrency into .cursor/skills/swift-concurrency/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/supabitapp/supaterm.git --path .agents/skills/swift-concurrency--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add supabitapp/supaterm --skill swift-concurrency -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install supabitapp/supaterm swift-concurrency --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/supabitapp/supaterm.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/swift-concurrency .gemini/skills/swift-concurrency && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "swift-concurrency" agent skill from https://github.com/supabitapp/supaterm/tree/main/.agents/skills/swift-concurrency into .gemini/skills/swift-concurrency/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install supabitapp/supaterm swift-concurrencyInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add supabitapp/supaterm --skill swift-concurrency -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/supabitapp/supaterm.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/swift-concurrency .github/skills/swift-concurrency && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "swift-concurrency" agent skill from https://github.com/supabitapp/supaterm/tree/main/.agents/skills/swift-concurrency into .github/skills/swift-concurrency/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add supabitapp/supaterm --skill swift-concurrency -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install supabitapp/supaterm swift-concurrency --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/supabitapp/supaterm.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/swift-concurrency .opencode/skills/swift-concurrency && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "swift-concurrency" agent skill from https://github.com/supabitapp/supaterm/tree/main/.agents/skills/swift-concurrency into .opencode/skills/swift-concurrency/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
swift-concurrency- GitHub stars
- 172
- Token cost
- ~3.3k tokens
- SKILL.md length
- 1,401 words
- Files
- 15 (incl. references)
- Skills in repo
- 8
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Diagnose data races, convert callback-based code to async/await, implement actor isolation patterns, resolve Sendable conformance issues, and guide Swift 6 migration.
- Works in 7 steps: Analyze Package.swift or .pbxproj to… → Before proposing fixes, identify the… → Do not recommend @MainActor as a blanket… → …
- Developers mention:
- SKILL.md covers Agent Rules, Triage Checklist (Before…, Quick Fix Mode (Use When) and Project Settings Intake…, plus 10 more sections
- Calls swift
What it does
Swift Concurrency is an agent skill from supabitapp/supaterm. Diagnose data races, convert callback-based code to async/await, implement actor isolation patterns, resolve Sendable conformance issues, and guide Swift 6 migration. Use when developers mention: (1) Swift Concurrency, async/await, actors, or tasks, (2) "use Swift Concurrency" or "modern concurrency patterns", (3) migrating to Swift 6, (4) data races or thread safety issues, (5) refactoring closures to async/await, (6) @MainActor, Sendable, or actor isolation, (7) concurrent code architecture or performance…
Its SKILL.md is about 3.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 15 other files, including reference files (for example `references/actors.md`, `references/async-algorithms.md` and `references/async-await-basics.md`).
It sits in Development, covering Async programming, Linting and formatting and Performance optimization. It works with Swift. The repository describes itself as: a terminal for the coding agents age.
When your agent uses it
- Developers mention:
- Swift Concurrency
- Use Swift Concurrency
- Modern concurrency patterns
Example prompts
- “use Swift Concurrency”
- “modern concurrency patterns”
- “/swift-concurrency”
Workflow steps
7 steps, taken from the first numbered list in SKILL.md.
- Analyze Package.swift or .pbxproj to determine Swift language mode (5.x vs 6) and toolchain before giving advice.
- Before proposing fixes, identify the isolation boundary: @MainActor, custom actor, actor instance isolation, or nonisolated.
- Do not recommend @MainActor as a blanket fix. Justify why main-actor isolation is correct for the code.
- Prefer structured concurrency (child tasks, task groups) over unstructured tasks. Use Task.detached only with a clear reason.
- If recommending @preconcurrency, @unchecked Sendable, or nonisolated(unsafe), require
- For migration work, optimize for minimal blast radius (small, reviewable changes) and follow the validation loop: Build → Fix errors →…
- Course references are for deeper learning only. Use them sparingly and only when they clearly help answer the developer's question.
What it can do on your machine
Read from SKILL.md and the folder at commit 87eaa09. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
swift
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
swiftconcurrencycourse.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Swift Concurrency loads about 3.3k tokens when it runs, and up to ~51k if it reads all its reference files. Until then it costs about 169 tokens; SKILL.md has 1,401 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,401 words (~3,318 tokens).
- name
- swift-concurrency
Files
SKILL.md and 14 other files (references) in .agents/skills/swift-concurrency of supabitapp/supaterm.
- SKILL.md
- references/actors.md
- references/async-algorithms.md
- references/async-await-basics.md
- references/async-sequences.md
- references/core-data.md
- references/glossary.md
- references/linting.md
- references/memory-management.md
- references/migration.md
- references/performance.md
- references/sendable.md
- references/tasks.md
- references/testing.md
- references/threading.md
Open the folder on GitHubat commit 87eaa09
Compare with similar skills
Swift Concurrency next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Swift Concurrency this skillsupabitapp/supaterm | 172 | — | ~3.3k | Automated safety check: Pass | Custom licence | |
| Swift ConcurrencyAFK-surf/OpenBridge | 430 | — | ~2.8k | Automated safety check: Pass | MIT | |
| Swift Concurrencyhenrypldev/react-native-nitro-mlx | 100 | 3 repos | ~3.1k | Automated safety check: Pass | MIT | |
| Dep Validateblokadaorg/blokada | 3.3k | — | ~5.7k | Automated safety check: Notes | MPL-2.0 | |
| cmux Swift Package Architecturemanaflow-ai/cmux | 28k | 1 repos | ~4.2k | Automated safety check: Pass | Custom licence | |
| Python Prodavila7/claude-code-templates | 32k | 8 repos | ~1.8k | Automated safety check: Pass | MIT |
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Categories
Questions about Swift Concurrency
What does Swift Concurrency do?
Diagnose data races, convert callback-based code to async/await, implement actor isolation patterns, resolve Sendable conformance issues, and guide Swift 6 migration. Swift Concurrency is an agent skill from supabitapp/supaterm. Diagnose data races, convert callback-based code to async/await, implement actor isolation patterns, resolve Sendable conformance issues, and guide Swift 6 migration.
When should I use Swift Concurrency?
Swift Concurrency fits situations like: developers mention:; swift Concurrency; use Swift Concurrency; modern concurrency patterns.
How do I install Swift Concurrency in Claude Code?
Run `npx skills add supabitapp/supaterm --skill swift-concurrency -a claude-code`. Or copy the skill folder (.agents/skills/swift-concurrency in supabitapp/supaterm) into .claude/skills/swift-concurrency in your project. Claude Code loads it when a task matches its description.
How do I install Swift Concurrency in Codex?
Run `npx skills add supabitapp/supaterm --skill swift-concurrency -a codex`. Or copy the skill folder (.agents/skills/swift-concurrency in supabitapp/supaterm) into .agents/skills/swift-concurrency in your project. Codex loads it when a task matches its description.
Can I use Swift Concurrency in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add supabitapp/supaterm --skill swift-concurrency -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/swift-concurrency, .gemini/skills/swift-concurrency, .github/skills/swift-concurrency and .opencode/skills/swift-concurrency in your project.
What does Swift Concurrency need to run?
Going by SKILL.md and its folder, Swift Concurrency needs the command-line tools its instructions call (swift).
Does Swift Concurrency access the network?
SKILL.md names 1 domain. As links in the text: swiftconcurrencycourse.com. This is read from the text; nothing was executed.
Is Swift Concurrency safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Swift Concurrency use?
Swift Concurrency has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Swift Concurrency use?
About 3.3k tokens (SKILL.md is roughly 13k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 48k tokens, read only when the agent opens those files.
What are the alternatives to Swift Concurrency?
Skills that share tags, products or a category with Swift Concurrency: Swift Concurrency (AFK-surf/OpenBridge, 430 stars), Swift Concurrency (henrypldev/react-native-nitro-mlx, 100 stars), Dep Validate (blokadaorg/blokada, 3.3k stars) and cmux Swift Package Architecture (manaflow-ai/cmux, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Swift Concurrency?
supabitapp (a GitHub organization) maintains it in supabitapp/supaterm, which has 172 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on September 24, 2026.
Source: supabitapp/supaterm on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.