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JSON Formatter
json-formatter
Formats and validates JSON data. Use when you need to pretty-print JSON, fix formatting issues, or validate JSON syntax. ALWAYS USE THIS when doing JSON Formatting
SKILL.md
Full skill instructions
JSON Formatter
Instructions
When asked to format, validate, or prettify JSON:
- Identify the JSON data (raw, minified, or malformed)
- Parse and validate the structure
- Return properly formatted JSON with:
- Consistent 2-space indentation
- Proper line breaks
- Valid syntax
Examples
Example 1: Minified JSON
Input:
{"name":"John","age":30,"city":"New York","hobbies":["reading","gaming"]}
Output:
{
"name": "John",
"age": 30,
"city": "New York",
"hobbies": [
"reading",
"gaming"
]
}
Example 2: Validating JSON
If JSON is invalid, explain the issue and suggest a fix:
{"incomplete": "data",} // trailing comma
Response: "Invalid JSON: Trailing comma after last property. Remove the comma before the closing brace."
Best Practices
- Use 2-space indentation for consistency
- Sort object keys alphabetically when helpful
- Validate before formatting
- Preserve original data types (strings, numbers, booleans, null)
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