cloudkit SKILL.md skillA
cloudkit from jordancoin/ios-skills-collection is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jordancoin/ios-skills-collection/cloudkit@git:20260329.893209fPins git:20260329.893209f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jordancoin/ios-skills-collection
- Path
skills/dpearson2699--cloudkit/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260329.893209f, committed Mar 29, 2026
- Size
- 17,830 bytes
- Repository stars
- 6
- License
- a license file GitHub does not identify
Implement, review, or improve CloudKit and iCloud sync in iOS/macOS apps. Use when working with CKContainer, CKRecord, CKQuery, CKSubscription, CKSyncEngine, CKShare, NSUbiquitousKeyValueStore, or iCloud Drive file coordination; when syncing SwiftData models via ModelConfiguration with cloudKitDatabase; when handling CKError codes for conflict resolution, network failures, or quota limits; or when checking iCloud account status before performing sync operations.
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
# CloudKit Sync data across devices using CloudKit, iCloud key-value storage, and iCloud Drive. Covers container setup, record CRUD, queries, subscriptions, CKSyncEngine, SwiftData integration, conflict resolution, and error handling. Targets iOS 26+ with Swift 6.3; older availability noted where relevant. ## Contents - [Container and Database Setup](#container-and-database-setup) - [CKRecord CRUD](#ckrecord-crud) - [CKQuery](#ckquery) - [CKSubscription](#cksubscription) - [CKSyncEngine (iOS 17+)](#cksyncengine-ios-17) - [SwiftData + CloudKit](#swiftdata--cloudkit) - [NSUbiquitousKeyValueStore](#nsubiquitouskeyvaluestore) - [iCloud Drive File Sync](#icloud-drive-file-sync) - [Account Status and Error Handling](#account-status-and-error-handling) - [Conflict Resolution](#conflict-resolution) - [Common Mistakes](#common-mistakes) - [Review Checklist](#review-checklist) - [References](#references) ## Container and Database Setup Enable iCloud + CloudKit in Signing & Capabilities. A container provides three databases: | Database | Scope | Requires iCloud | Storage Quota | |----------|-------|-----------------|---------------| …
Read the whole file at its exact version.
How to install
mdr add jordancoin/ios-skills-collection/cloudkit@sha256:3d9d788975e835d6The line at the top of this page pins the label git:20260329.893209f, 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_miggz4udcl2kz6lv)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Mar 29, 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 (17830 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
jordancoin/ios-skills-collection · 6 stars · license a license file GitHub does not identify · pushed 2026-09-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_miggz4udcl2kz6lv GET https://markdownregistry.com/api/v1/resolve?ref=jordancoin/ios-skills-collection/cloudkit GET https://markdownregistry.com/api/v1/blob/3d9d788975e835d6e76c8df3210c7f31b0fe42b9dcfa969632f0e98a18034072
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.