swift-concurrency SKILL.md skillA
swift-concurrency from rusel95/ios-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add rusel95/ios-agent-skills/swift-concurrency@v1.1.2Pins v1.1.2 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- rusel95/ios-agent-skills
- Path
skills/swift-concurrency/SKILL.md- Versions recorded
- 3
- Latest version
- v1.1.2, committed Apr 12, 2026
- First version recorded
- Mar 28, 2026
- Size
- 15,680 bytes
- Repository stars
- 12
- License
- MIT
Use for any Swift Concurrency question on Apple platforms. Triggers on: actor reentrancy (stale state after await), AsyncStream lifecycle (continuation.finish, onTermination), TaskGroup memory and task throttling (activeProcessorCount), Sendable conformance across actor boundaries (non-Sendable third-party types), SWIFT_STRICT_CONCURRENCY=complete error triage ('Sending X risks causing data races'), Swift 6 / 6.2 migration (nonisolated caller-side isolation, @concurrent), cooperative pool…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Swift Concurrency Enterprise-grade skill for Swift Concurrency crash prevention, strict concurrency migration, and Swift 6.2 readiness. Opinionated: prescribes structured concurrency over unstructured, actors for shared mutable state, `@MainActor` for UI isolation, `Mutex` for synchronous critical sections, compile-time isolation over runtime hops, and `withCheckedContinuation` over `withUnsafeContinuation`. Every rule in this skill has broken a real production app. ## Concurrency Layers ```text Application Layer -> Structured concurrency: TaskGroup, async let, .task modifier Actor Layer -> actor for shared mutable state, @MainActor for UI state Async/Await Layer -> Cooperative, non-blocking async functions on the cooperative pool Sendable Layer -> Compile-time data-race safety at isolation boundary crossings Compiler Layer -> SWIFT_STRICT_CONCURRENCY=complete, Swift 6 language mode, TSan ``` ## Quick Decision Trees ### "What isolation does this type need?" ``` Does this type own mutable state shared across concurrency domains? +-- YES -> Does it need to update UI? | +-- YES -> @MainActor class/struct …
Read the whole file at its exact version.
How to install
mdr add rusel95/ios-agent-skills/swift-concurrency@sha256:6be6625aaf6a7f1cThe line at the top of this page pins the label v1.1.2, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_gh5atdeb4w7irrew)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Mar 28, 2026 and Apr 12, 2026, about one every 8 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1.2 latest | 2026-04-12 | c3b23bc | 15,680 B | A | view · diff |
| v1.1.1 | 2026-04-02 | 0f1e294 | 13,720 B | A | view · diff |
| v1.1.1 | 2026-03-28 | 940b323 | 13,674 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (15680 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
rusel95/ios-agent-skills · 12 stars · license MIT · pushed 2026-10-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gh5atdeb4w7irrew GET https://markdownregistry.com/api/v1/resolve?ref=rusel95/ios-agent-skills/swift-concurrency GET https://markdownregistry.com/api/v1/blob/6be6625aaf6a7f1c4b048cfdba44f9766de84022a1750cad463069136a4a87c1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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