write-swift SKILL.md skillA
write-swift from nebutra/nebutra-sailor is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nebutra/nebutra-sailor/write-swift@git:20260827.ca77bd1Pins git:20260827.ca77bd1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nebutra/nebutra-sailor
- Path
.agents/skills/write-swift/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260827.ca77bd1, committed Aug 27, 2026
- Size
- 42,185 bytes
- Repository stars
- 5
- License
- Apache-2.0
How to write modern Swift well — modeling with value types, Swift 6 data-race safety and approachable concurrency (@concurrent, main-actor-by-default, actors, task groups), protocols and generics (some vs any), API design, performance and ARC, Swift Testing, macros, and the modern language features agents don't know about yet. Use when writing, reviewing, or migrating Swift, or when a concurrency error, a hang, a data race, a retain cycle, or a performance problem needs fixing.
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
# Write Swift How to write Swift the way the language wants to be written, current through Swift 6.4. **Toolchain baseline: Swift 6.3** (current release as of August 2026). Everything here compiles on 6.3 unless marked ⚠, which flags unreleased Swift 6.4 features. Concurrency guidance assumes the Swift 6.2 model — if the project is on 6.1 or earlier, §3's rules about `async` and `@concurrent` do not apply. The through-line: **Swift is a progressive-disclosure language. Start with the simplest, most static, most single-threaded thing that works, and buy dynamism — concurrency, reference semantics, existentials, unsafe pointers — only where you can point at the reason.** Every rule below is an application of that. Model this hierarchy of defaults. Move down a level only with a reason you can state: | Need | Reach for | Move down only when | | ------------ | ----------------------- | ---------------------------------------------------------- | | Data | `struct` / `enum` | you need identity, sharing, or inheritance | …
Read the whole file at its exact version.
How to install
mdr add nebutra/nebutra-sailor/write-swift@sha256:2579cb2684245f75The line at the top of this page pins the label git:20260827.ca77bd1, 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_bgfhvuu66ysupbag)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 27, 2026.
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 (42185 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
nebutra/nebutra-sailor · 5 stars · license Apache-2.0 · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_bgfhvuu66ysupbag GET https://markdownregistry.com/api/v1/resolve?ref=nebutra/nebutra-sailor/write-swift GET https://markdownregistry.com/api/v1/blob/2579cb2684245f75a261cbb13aa4a12f7f9441dabdfe3bc2e72dc2f04ec5e9fd
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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