swift-concurrency-migration SKILL.md skillA
swift-concurrency-migration from fal3/claude-skills-collection is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add fal3/claude-skills-collection/swift-concurrency-migration@git:20260917.7201e74Pins git:20260917.7201e74 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- fal3/claude-skills-collection
- Path
skills/swift-concurrency-migration/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260917.7201e74, committed Sep 17, 2026
- First version recorded
- Aug 14, 2026
- Size
- 7,605 bytes
- Repository stars
- 20
- License
- MIT
Plan, implement, debug, and verify migrations from callback-, delegate-, Dispatch-, or permissive-concurrency Swift code to Swift 6 strict concurrency, including target-specific build settings, approachable concurrency, default actor isolation, @concurrent work, actors, Sendable boundaries, cancellation, and structured tasks. Use for Swift 6 compiler diagnostics, concurrency adoption plans, legacy async bridges, or migration-focused tests in Apple-platform apps and Swift packages. Do not use…
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 Migration Migrate from evidence, one isolation boundary at a time. Preserve behavior before changing architecture, and keep every target buildable between migration waves. ## Inspect before editing Determine the compiler, language mode, deployment targets, and effective settings for every affected target. Do not infer them from the newest syntax in one file. ```bash xcodebuild -version xcrun swiftc --version xcodebuild -list -project App.xcodeproj xcodebuild -showBuildSettings -project App.xcodeproj -target App \ | rg 'SWIFT_VERSION|SWIFT_STRICT_CONCURRENCY|SWIFT_DEFAULT_ACTOR_ISOLATION|SWIFT_APPROACHABLE_CONCURRENCY|IPHONEOS_DEPLOYMENT_TARGET|MACOSX_DEPLOYMENT_TARGET' ``` For a package, inspect `// swift-tools-version`, each target's `swiftSettings`, and the resolved compiler: ```bash swift package dump-package swift --version ``` Record separately: - Xcode and Swift toolchain versions. - Swift language mode and strict-concurrency level. - Default actor isolation and approachable-concurrency setting. - App, extension, test, and package deployment targets. - Existing global actors, actors, locks, queues, callbacks, and suppression annotations. …
Read the whole file at its exact version.
How to install
mdr add fal3/claude-skills-collection/swift-concurrency-migration@sha256:2c62505e04b36b76The line at the top of this page pins the label git:20260917.7201e74, 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_gyrznis7dwbs3uly)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 14, 2026 and Sep 17, 2026, about one every 34 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260917.7201e74 latest | 2026-09-17 | 7201e74 | 7,605 B | A | view · diff |
| git:20260814.a9c26d7 | 2026-08-14 | a9c26d7 | 7,610 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 (7605 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
fal3/claude-skills-collection · 20 stars · license MIT · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gyrznis7dwbs3uly GET https://markdownregistry.com/api/v1/resolve?ref=fal3/claude-skills-collection/swift-concurrency-migration GET https://markdownregistry.com/api/v1/blob/2c62505e04b36b76ecc6d15d15eaeb5e1bb55fd19b065112b6258aa78b021420
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.