Quicktype – JSON to Type Generator

Generate strongly-typed interfaces from JSON files or URLs.

When to Use

• User asks to generate types from JSON
• User wants TypeScript interfaces for API responses
• User needs type definitions for config files
• User mentions “quicktype” or “json to types”

Instructions

1. Parse the input to identify:

   • File path or URL
   • Target language (default: TypeScript)
   • Output file (optional)

2. Run the quicktype script:

python3 ~/.claude/skills/quicktype/scripts/quicktype.py <file> [--lang LANG] [--out FILE]

3. Display the generated types in a fenced code block

4. If --out specified, save to that file

Supported Languages

Examples

Input: /quicktype api/users.json Output: TypeScript interfaces for the JSON structure

Input: /quicktype config.json --lang go Output: Go struct definitions

Input: /quicktype response.json --out src/types/api.ts Output: Types saved to specified file