Use when working with ANY data persistence, database, storage, CloudKit, migration, or serialization. Covers SwiftData, Core Data, GRDB, SQLite, CloudKit sync, file storage, Codable, migrations.
This skill does not declare a tool allowlist. The agent host applies whatever default tools are available at runtime.
SKILL.md / Manifest
https://raw.githubusercontent.com/charleswiltgen/axiom/main/.claude-plugin/plugins/axiom/skills/axiom-data/SKILL.mdRegistry
github (via claudemarketplaces.com)