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Apple app data persistence v1.0.0

Use this resource to write or fix data persistence in an Apple app

New

  • 457 downloads
  • 137 likes
  • 155 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install apple-data-persistence

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

When you work on storage in an iOS or macOS app, the agent uses this router to pick the matching reference among SwiftData, Core Data, GRDB, SQLite, Realm, CloudKit, file storage, Codable and migrations. You get an answer or code based on those references.

Mostly picked by

Updated November 2, 2026

Card for the “Apple app data persistence” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: router, decision tree and critical migration patterns
  • skills/database-migration.md: database migrations
  • skills/codable.md: serialization with Codable

Good fit for

  • You add SwiftData or Core Data to an iOS app
  • You must migrate a SQLite or GRDB schema without losing data

Not for

    Tags

    • swiftdata
    • core data
    • migrations
    • codable
    • ios

    About

    You say

    “Add a SwiftData migration to my Note model without losing existing users' data.”

    Card for the “Apple app data persistence” skill

    Skill published by charleswiltgen under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to write or fix data persistence in an Apple app
    3. Review and adjust the result

    Content preview

    Files

    • agents/openai.yaml0.2 KB
    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md13.1 KB
    • skills/cloud-sync-diag.md22.9 KB
    • skills/cloud-sync.md15.7 KB
    • skills/cloudkit-ref.md24.3 KB
    • skills/codable.md25.1 KB
    • skills/core-data-diag.md39.2 KB
    • skills/core-data.md12.9 KB
    • skills/database-migration.md20.2 KB
    • skills/grdb-app-groups.md25.4 KB
    • skills/grdb-performance.md31.1 KB
    • skills/grdb.md26.6 KB
    • skills/icloud-drive-ref.md13.2 KB
    • skills/realm-migration-ref.md24.9 KB
    • skills/sql-json-ref.md20.3 KB
    • skills/sqlite-fts-ref.md34.1 KB
    • skills/sqlitedata-migration.md10 KB
    • skills/sqlitedata-ref.md36.3 KB
    • skills/sqlitedata.md33.5 KB
    • skills/storage-diag.md15.3 KB
    • skills/storage-management-ref.md20.6 KB
    • skills/storage.md18.1 KB
    • skills/swift-sharing.md12.9 KB
    • skills/swiftdata-migration-diag.md19.4 KB
    • skills/swiftdata-migration.md30.1 KB
    • skills/swiftdata.md46.3 KB

    Origin and licence

    Listed unmodified

    Author
    charleswiltgen
    Source
    github.com/charleswiltgen/axiom/tree/8e025d50707116c3cf52c274b5b200213999a927/axiom-codex/skills/axiom-data
    Licence
    MIT

    Notice

    « axiom-data » (charleswiltgen, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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