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json-validator

Validate, format, and fix JSON data with syntax checks and 2-space indentation.

Updated Oct 19, 2025
Search Tags:#automation#developer tools#api#validation#formatting#json#data processing
One-click install
npx skills add https://github.com/Alon2904/claude-code-skill-creator --skill json-validator
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: json-validator
Source: https://github.com/Alon2904/claude-code-skill-creator/tree/main/examples/json-validator
Command: npx skills add https://github.com/Alon2904/claude-code-skill-creator --skill json-validator

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

JSON data is often malformed, hard to read, or inconsistent, leading to frustrating errors in applications and APIs. This Skill eliminates the tedious manual process of ensuring JSON data is correct, readable, and structured, saving you valuable time and significantly reducing debugging complexity.

Core Features & Use Cases

  • Validate JSON: Automatically identify syntax errors with precise line numbers, provide contextual feedback, and suggest specific corrections to quickly pinpoint and resolve issues.
  • Format & Prettify: Standardize JSON data with consistent 2-space indentation, remove unnecessary whitespace, and optionally sort keys for enhanced readability and maintainability.
  • Fix Common Issues: Intelligently correct frequent JSON errors such as trailing commas, single quotes, unquoted keys, and comments, transforming invalid JSON into a usable format.
  • Use Case: When debugging an API response, configuring a new service, or processing data files, simply provide the JSON to this Skill to instantly validate, format, and fix any issues, ensuring your data is always pristine and ready for use.

Quick Start

Example 1: Validate and Fix Malformed JSON

Validate this JSON and fix any errors: {'user': 'Alice', 'age': 30, 'city': 'New York',}

Example 2: Format Minified JSON

Format this JSON nicely: {"name":"test","items":[1,2,3],"active":true}

Frequently Asked Questions about json-validator

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

FAQPage Schema
How do I validate JSON syntax and find errors quickly?▼

JSON validation automatically identifies syntax errors with precise line numbers and contextual feedback. This Skill checks your JSON data for common mistakes like trailing commas, unquoted keys, and mismatched brackets, pinpointing exactly where corrections are needed.

Can I format and prettify minified JSON data?▼

Yes, formatting standardizes JSON with consistent 2-space indentation, removes unnecessary whitespace, and optionally sorts keys for readability. This is useful when working with API responses or configuration files that arrive compressed or difficult to parse manually.

What common JSON errors can be automatically fixed?▼

This Skill intelligently corrects frequent JSON issues including trailing commas, single quotes instead of double quotes, unquoted keys, and embedded comments. It transforms invalid JSON into usable format without manual editing.

How do I handle malformed API responses or config files?▼

Provide the malformed JSON data directly to validate, format, and fix all issues in one step. The Skill processes data from APIs, configuration files, and data interchange contexts, delivering corrected output ready for immediate use.

Do I need additional tools to validate JSON from different sources?▼

No prerequisites are required. This Skill handles JSON from any source—APIs, config files, data exports—without dependencies. Simply input the JSON data and receive validation results, formatted output, and corrected versions.

What's the best way to ensure JSON consistency across my project?▼

Standardize JSON data using consistent formatting with 2-space indentation and optional key sorting. Regular validation catches syntax errors early in development, reducing debugging complexity when JSON is exchanged between systems or stored in configuration files.

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