xxf-json

Parse and serialize JSON in Swift with dynamic key handling and tolerant typing.

6|1|Updated May 22, 2025
One-click install
npx skills add https://github.com/NBXXF/xxf_ios --skill xxf-json
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: xxf-json
Source: https://github.com/NBXXF/xxf_ios/tree/main/skills/xxf-json
Command: npx skills add https://github.com/NBXXF/xxf_ios --skill xxf-json

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This tool enhances Swift Codable to provide robust JSON parsing and serialization, especially for dynamic keys and tolerant typing, reducing boilerplate code.

Core Features & Use Cases

  • Dynamic key handling: decode JSON with keys that vary across responses without manual model changes.
  • Codable-assisted parsing and encoding: unify decoding paths and encoding output across models.
  • Use Case: When consuming a REST API that returns fields with optional types or renamed keys, you can rely on this tool to gracefully map to your Swift models.

Quick Start

Use the xxf-json tool to parse a sample JSON string and serialize it back to JSON.

Frequently Asked Questions about xxf-json

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I parse JSON with dynamic keys in Swift without writing manual mapping code?

To parse JSON with dynamic keys in Swift, you can use enhanced Codable helpers that automatically decode varying field names without manual model changes, reducing boilerplate code while maintaining type safety.

Why does Swift Codable decoding fail when API responses have optional or mismatched field types?

Swift Codable decoding fails on mismatched types because it requires strict schema alignment. Using tolerant typing helpers allows graceful decoding of optional fields and renamed keys, ensuring robust parsing across varying API responses.

What's the best way to handle varying JSON response structures in Swift models?

The best way to handle varying JSON response structures in Swift is applying enhanced Codable helpers that unify decoding paths and encoding output, ensuring robust mapping to Swift models even when field names or types differ.

Does Swift Codable support graceful error handling for unexpected JSON field types?

Swift Codable supports graceful error handling for unexpected JSON field types when paired with tolerant typing helpers. This approach ensures robust decoding and encoding across models while maintaining type safety during API consumption.

How do I serialize Swift models back to JSON when the original API uses dynamic field names?

To serialize Swift models back to JSON with dynamic field names, use enhanced Codable encoding helpers that unify encoding output across models, ensuring robust serialization that matches the original API structure.

When do I need enhanced Codable helpers for JSON parsing instead of standard Swift decoding?

You need enhanced Codable helpers for JSON parsing when consuming REST APIs that return fields with optional types, renamed keys, or varying structures, requiring robust decoding and encoding with graceful error handling.