sota-swift SKILL.md skillA
sota-swift from martinholovsky/sota-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add martinholovsky/sota-skills/sota-swift@git:20261030.28781c4Pins git:20261030.28781c4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- martinholovsky/sota-skills
- Path
skills/sota-swift/SKILL.md- Versions recorded
- 8
- Latest version
- git:20261030.28781c4, committed Oct 30, 2026
- First version recorded
- Oct 7, 2026
- Size
- 8,929 bytes
- Repository stars
- 26
- License
- CC-BY-4.0
State-of-the-art Swift engineering rules (Swift 6 language mode) that Claude applies when writing or auditing Swift on ANY target — server-side services (Vapor, Hummingbird, SwiftNIO), CLIs, libraries, packages and apps. Covers optionals and error handling, value types and API design, Swift 6 data-race safety (Sendable, actors, isolation, cancellation), ARC and retain cycles, unsafe pointers and strict memory safety, security (CryptoKit/swift-crypto, Codable and NSKeyedUnarchiver, SQLKit raw…
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
# SOTA Swift (2026) ## Purpose Expert-level rules for producing and auditing production Swift, on any target. Swift is a language first and an Apple-platform toolkit second: a Vapor service on Linux, a CLI and an iOS app share every rule here. **Platform concerns route elsewhere**: app lifecycle, store review, Keychain, push and offline sync → [`sota-mobile`](../sota-mobile/SKILL.md); containers → [`sota-sandboxing`](../sota-sandboxing/SKILL.md); a command-line tool's flags, output and exit codes → [`sota-cli-ux`](../sota-cli-ux/SKILL.md); telemetry → [`sota-observability`](../sota-observability/SKILL.md). **Version floor.** swift.org publishes **no end-of-life or support-window policy** for older Swift releases (searched the swift.org site source, 2026-10-07); the nearest written bar is the Swift Server Workgroup's graduation criteria — *"Support new GA versions of Swift within 30d"* and a *"documented support strategy for at least one previous major version"*. So pin the toolchain you build with, verify the latest release at swift.org, and treat the **language mode** as the load-bearing line: Swift 6 mode makes data-race safety a compile error. …
Read the whole file at its exact version.
How to install
mdr add martinholovsky/sota-skills/sota-swift@sha256:1f490c633403b451The line at the top of this page pins the label git:20261030.28781c4, 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_hyf2cf4b7ylwprel)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Oct 7, 2026 and Oct 30, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261030.28781c4 latest | 2026-10-30 | 28781c4 | 8,929 B | A | view · diff |
| git:20261028.da12e08 | 2026-10-28 | da12e08 | 8,832 B | A | view · diff |
| git:20261027.0f83440 | 2026-10-27 | 0f83440 | 8,820 B | A | view · diff |
| git:20261026.808c340 | 2026-10-26 | 808c340 | 8,759 B | A | view · diff |
| git:20261025.c05557f | 2026-10-25 | c05557f | 8,748 B | A | view · diff |
| git:20261024.8dd2b0a | 2026-10-24 | 8dd2b0a | 8,737 B | A | view · diff |
| git:20261012.ae1b29b | 2026-10-12 | ae1b29b | 8,496 B | A | view · diff |
| git:20261007.cb5a80f | 2026-10-07 | cb5a80f | 8,131 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 (8929 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
martinholovsky/sota-skills · 26 stars · license CC-BY-4.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hyf2cf4b7ylwprel GET https://markdownregistry.com/api/v1/resolve?ref=martinholovsky/sota-skills/sota-swift GET https://markdownregistry.com/api/v1/blob/1f490c633403b451be184cd3c1056e3fdee3a57c92db55d74ef58f4603dcb81d
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.