Claude-skill-registry 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

install

source · Clone the upstream repo

git clone https://github.com/majiayu000/claude-skill-registry

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/data/json-formatter" ~/.claude/skills/majiayu000-claude-skill-registry-json-formatter && rm -rf "$T"

manifest: skills/data/json-formatter/SKILL.md

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)