Can it handle snake_case to camelCase conversion automatically?

Yes, it includes patterns for configuring JSONDecoder's keyDecodingStrategy and using custom CodingKeys when specific granular control is required.

How does this skill help with 'Type does not conform to Decodable' errors?

The skill provides a systematic approach to identify non-conforming properties and suggests solutions like manual init(from:) implementation or using CodingKeys to exclude problematic fields.

How does it handle complex, nested JSON objects?

It provides implementation guides for nestedContainers and bridge types, allowing you to transform deeply nested JSON into flat, usable Swift structures.

Does this skill support modern Swift 6 patterns?

Absolutely. It is specifically updated for Swift 6.x, addressing modern concurrency requirements and synthesis behavior for enums and structs.

Does it provide support for custom date formats?

Yes, it covers various dateDecodingStrategy options including ISO 8601, Unix timestamps, and optimized custom DateFormatter closures for maximum performance.

Axiom Swift Codable

Name: Axiom Swift Codable
Author: CharlesWiltgen

byCharlesWiltgen

•

233

Mobile Development

Simplifies Swift Codable conformance with battle-tested patterns for JSON serialization and data modeling in modern xOS development.

About

Axiom Codable provides Claude with specialized expertise in Swift's Codable protocol, offering comprehensive patterns and anti-patterns tailored for Swift 6.x. It guides developers through automatic synthesis, complex nested JSON transformations, custom date handling, and the resolution of common errors like 'Type does not conform to Decodable.' Whether you're handling simple API responses or complex, mismatched data structures, this skill provides the necessary bridge types and container strategies to ensure robust data persistence and networking for iOS, iPadOS, watchOS, and tvOS.

Key Features

Automatic Codable synthesis for structs and enums with associated values
Advanced CodingKeys customization for property renaming and exclusion
233 GitHub stars
Comprehensive date handling strategies including ISO 8601 and custom formatters
Manual implementation patterns for flattening complex nested JSON structures
Type transformation techniques for string-backed numbers and flexible API values

Use Cases

Customizing JSON serialization for legacy APIs with inconsistent naming conventions
Mapping hierarchical API responses to flat, clean Swift domain models
Resolving Swift 6 compiler errors related to protocol conformance and initialization

About

Key Features

Automatic Codable synthesis for structs and enums with associated values
Advanced CodingKeys customization for property renaming and exclusion
233 GitHub stars
Comprehensive date handling strategies including ISO 8601 and custom formatters
Manual implementation patterns for flattening complex nested JSON structures
Type transformation techniques for string-backed numbers and flexible API values

Use Cases

Customizing JSON serialization for legacy APIs with inconsistent naming conventions
Mapping hierarchical API responses to flat, clean Swift domain models
Resolving Swift 6 compiler errors related to protocol conformance and initialization