swift-codable
Implement Swift Codable models for JSON and property-list encoding and decoding with JSONDecoder, JSONEncoder, CodingKeys, and custom init(from:) or encode(to:). Use when parsing API responses, remapping keys, flattening nested JSON, handling date or data decoding strategies, decoding heterogeneous arrays, or integrating Codable with URLSession, SwiftData, or UserDefaults.
Profile →npx skills add dpearson2699/swift-ios-skills --skill swift-codable --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Swift Codable Encode and decode Swift types using `Codable` (`Encodable & Decodable`) with `JSONEncoder`, `JSONDecoder`, and related APIs. Targets Swift 6.3 / iOS 26+. ## Contents - [Decode and Verify Workflow](#decode-and-verify-workflow) - [Basic Conformance](#basic-conformance) - [Custom CodingKeys](#custom-codingkeys) - [Custom Decoding and Encoding](#custom-decoding-and-encoding) - [Nested and Flattened Containers](#nested-and-flattened-containers) - [Heterogeneous Arrays](#heterogeneous-arrays) - [Date Decoding Strategies](#date-decoding-strategies) - [Data and Key Strategies](#data-and-key-strategies) - [Lossy Array Decoding](#lossy-array-decoding) - [Single Value Containers](#single-value-containers) - [Default Values for Missing Keys](#default-values-for-missing-keys) - [Encoder and Decoder Configuration](#encoder-and-decoder-configuration) - [Codable with URLSession](#codable-with-urlsession) - [Codable with SwiftData](#codable-with-swiftdata) - [Codable with UserDefaults](#codable-with-userdefaults) - [Common Mistakes](#common-mistakes) - [Review Checklist](#review-checklist) - [References](#references) ## Decode and Verify Workflow 1. Decode representative success, mi
- Contents
- Decode and Verify Workflow
- Basic Conformance
- Custom CodingKeys
- Custom Decoding and Encoding
- Nested and Flattened Containers
- Heterogeneous Arrays
- Date Decoding Strategies
- Data and Key Strategies
- Lossy Array Decoding
- Single Value Containers
- Default Values for Missing Keys
- Encoder and Decoder Configuration
- Codable with URLSession
What does the swift-codable skill do?
Implement Swift Codable models for JSON and property-list encoding and decoding with JSONDecoder, JSONEncoder, CodingKeys, and custom init(from:) or encode(to:). Use when parsing API responses, remapping keys, flattening nested JSON, handling date or data decoding strategies, decoding heterogeneous arrays, or integrating Codable with URLSession, SwiftData, or UserDefaults.
How do I install it?
Run `npx skills add dpearson2699/swift-ios-skills --skill swift-codable --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From dpearson2699/swift-ios-skills, a repository with 963 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.