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twostraws/SwiftData-Agent-Skill
SwiftData agent skill for Claude Code, Codex, and other AI tools.
History
Review weekly changes to SKILL.md before updating. Dates mark the weeks in which we observed each version; checks apply to the recorded commits.
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swiftdata-pro/SKILL.md
Week of Oct 26, 2026 · Line counts unavailable
Before Not checked yet → After Network or broad shell
First observation → 8051f177a007
No earlier version was observed for comparison.
View on GitHubAdd to my skills
Verified commit 8051f177a0076e7fd45bdf4ee687b070ba58fdc6
git clone --filter=blob:none --no-checkout https://github.com/twostraws/SwiftData-Agent-Skill.git .hotskills/twostraws-swiftdata-agent-skill && git -C .hotskills/twostraws-swiftdata-agent-skill checkout --detach 8051f177a0076e7fd45bdf4ee687b070ba58fdc6
# Copy each selected skill directory from .hotskills/twostraws-swiftdata-agent-skill into .claude/skills/<skill-name>/464GitHub stars
8stars in 7 days
1skill in this repository
1commit in 30 days
Heat
6.1- Star growth, last 7 daysNot available
- Star growth, last 24 hoursNot available
- Rank movement, last 7 daysNot available
- Commits, last 30 daysNot available
- Accounts asking about it through MCP, last 7 daysNot available
- Hot votes this weekNot available
Heat never changes the order by stars, and sponsorship never touches it. How heat works
Stars over time
30-day change not yet available: not enough history.
Individual skills in this repository
- swiftdata-pro
swiftdata-pro
How it works
swiftdata-pro
When your agent uses it
Writes, reviews, and improves SwiftData code using modern APIs and best practices. Use when reading, writing, or reviewing projects that use SwiftData.
What it loads into context
Frontmatter
58 tokensAlways available to the agent
SKILL.md
819 tokensWhen the skill is activated
Reference documents
2,587 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Core Instructions
- Output Format
- References
Files
../.claude-plugin/marketplace.jsonasset693 bytesSKILL.mdcore3,722 bytesagents/openai.yamlasset340 bytesassets/swiftdata-pro-icon.pngasset3,033 bytesassets/swiftdata-pro-icon.svgasset1,539 bytesreferences/class-inheritance.mddoc3,804 bytesreferences/cloudkit.mddoc662 bytesreferences/core-rules.mddoc3,977 bytesreferences/indexing.mddoc800 bytesreferences/predicates.mddoc2,454 bytes
Read SKILL.md
Write and review SwiftData code for correctness, modern API usage, and adherence to project conventions. Report only genuine problems - do not nitpick or invent issues.
Review process:
1. Check for core SwiftData issues using `references/core-rules.md`.
1. Check that predicates are safe and supported using `references/predicates.md`.
1. If the project uses CloudKit, check for CloudKit-specific constraints using `references/cloudkit.md`.
1. If the project targets iOS 18+, check for indexing opportunities using `references/indexing.md`.
1. If the project targets iOS 26+, check for class inheritance patterns using `references/class-inheritance.md`.
If doing partial work, load only the relevant reference files.
## Core InstructionsSkills included
- swiftdata-pro
Repository facts
- License
- MIT
- Created
- Mar 11, 2026
- Last pushed
- Oct 19, 2026
- Forks
- 23
- Open issues
- 0
- Project activity
- Active
Before you install
Network or broad shellAutomated signals, not a guarantee
Checked Nov 5, 2026
- No broad tool permissions
- No dangerous shell commands
- 16 network referencesin 5 files: swiftdata-pro/references/core-rules.md:3 .claude-plugin/marketplace.json:13 swiftdata-pro/SKILL.md:81 and 2 more
- No hidden or obfuscated text
- No instruction overrides
- No executable scripts
- No access to secrets
- No requests to vote in Hot
Show all 16 signals by file
.claude-plugin/marketplace.json
- Network accessline 13
"version": "1.0.0", "author": { "name": "Paul Hudson" }, "homepage": "https://github.com/twostraws/SwiftData-Agent-Skill", - Network accessline 14
"author": { "name": "Paul Hudson" }, "homepage": "https://github.com/twostraws/SwiftData-Agent-Skill", "repository": "https://github.com/twostraws/SwiftData-Agent-Skill", - Network accessline 15
"homepage": "https://github.com/twostraws/SwiftData-Agent-Skill", - Network accessline 16
"repository": "https://github.com/twostraws/SwiftData-Agent-Skill",
swiftdata-pro/SKILL.md
swiftdata-pro/assets/swiftdata-pro-icon.svg
- Network accessline 1
<?xml version="1.0" encoding="UTF-8"?> <svg xmlns="http://www.w3.org/2000/svg" width="227.72" height="227.72" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 227.72 227.72"> - Network accessline 2
<svg xmlns="http://www.w3.org/2000/svg" width="227.72" height="227.72" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 227.72 227.72">
swiftdata-pro/references/core-rules.md
- Network accessline 3
- When SwiftData first launched, it autosaved model contexts aggressively. Since then, autosaving happens less frequently and is now hard to predict, so many developers prefer to add explicit calls to `save()` when correctness is important. - Network accessline 4
- There is no need to check `modelContext.hasChanges` before saving; just call `save()` directly. - `ModelContext` and model instances must never cross actor boundaries. Model containers and persistent identifiers *are* sendable, so if you - Network accessline 5
- `ModelContext` and model instances must never cross actor boundaries. Model containers and persistent identifiers *are* sendable, so if you need a model instance to be transferred across actors you should send its identifier and re-fetch - Network accessline 12
- It is nearly always a good idea to have a specific migration schema in place, even if the project is only dealing with lightweight migrations. - It is nearly always a good idea to have an explicit delete rule in place for relationships. T - Network accessline 13
- It is nearly always a good idea to have an explicit delete rule in place for relationships. This is most commonly `@Relationship(deleteRule: .cascade)`, but others are available. The default is `.nullify`, which sets the related model's r - Network accessline 14
- Do not attempt to use `@Query` outside of SwiftUI views; it is designed to work specifically *inside* views, and will not operate correctly outside. For more help with SwiftUI, suggest the [SwiftUI Pro agent skill](https://github.com/twos
How the signals fit together
Facts from a static read of the files at the pinned commit. They describe what the code does, not why.
Some files could not be read; the facts below still hold.
Signal confidence: 10 facts
- Network access in code of the SKILL.mdswiftdata-pro/SKILL.md:81High confidence
- Network access in code of the SKILL.mdswiftdata-pro/SKILL.md:82High confidence
- Network access in prose of documentationswiftdata-pro/references/core-rules.md:3Low confidence
- Network access in prose of documentationswiftdata-pro/references/core-rules.md:4Low confidence
- Network access in prose of documentationswiftdata-pro/references/core-rules.md:5Low confidence
- Network access in prose of documentationswiftdata-pro/references/core-rules.md:12Low confidence
- Network access in prose of documentationswiftdata-pro/references/core-rules.md:13Low confidence
- Network access in prose of documentationswiftdata-pro/references/core-rules.md:14Low confidence
- Network access in code of documentationswiftdata-pro/references/predicates.md:26Low confidence
- Network access in code of documentationswiftdata-pro/references/predicates.md:27Low confidence
Works with
| Agent | Status | Evidence | Install to |
|---|---|---|---|
| Claude Code | Native | Manifest .claude-plugin/marketplace.json | .claude/skills/<skill-name>/ |
| Codex | Compatible | Standard SKILL.md swiftdata-pro/SKILL.md | .agents/skills/<skill-name>/ |
| Cursor | Compatible | Standard SKILL.md swiftdata-pro/SKILL.md | .cursor/skills/<skill-name>/ |
| Gemini CLI | Compatible | Standard SKILL.md swiftdata-pro/SKILL.md | .gemini/skills/<skill-name>/ |
| GitHub Copilot | Compatible | Standard SKILL.md swiftdata-pro/SKILL.md | .github/skills/<skill-name>/ |
| OpenCode | Compatible | Standard SKILL.md swiftdata-pro/SKILL.md | .opencode/skills/<skill-name>/ |
- Native The repository ships a manifest, folder or frontmatter field for this agent.
- Compatible A standard SKILL.md that this agent can read.
- Unknown No evidence either way.
Derived automatically from paths, manifests and frontmatter. Not tested on each agent.
