A powerful command-line tool to format, validate, beautify, and minify any JSON data for cleaner code and optimized performance.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install king-json-formatter
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install king-json-formatter using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is JSON Formatter?
The JSON Formatter is an indispensable tool for developers, data engineers, and AI workflows. As part of the ecosystem of Openclaw Skills, this tool simplifies raw JSON processing by offering instant formatting, structural validation, and minification. Whether you are dealing with large API payloads, local configuration files, or debugging data schemas, it helps make data human-readable and production-ready in seconds.
By integrating this utility into your development agent, you can automate JSON manipulation, enforce style rules, and detect structural syntax issues early in the software development lifecycle.
JSON Formatter Use Cases
- API Response Debugging: Quickly pretty-print nested, raw JSON responses from web APIs to make them human-readable.
- Data Payload Optimization: Minify large JSON datasets to reduce payload size before sending them over the network or deploying to production.
- Syntax Verification: Automatically validate JSON structures during automated builds or agent execution to prevent runtime syntax errors.
- Configuration Management: Clean up and sort keys in JSON configuration files to maintain high readability and clean version control diffs.
How JSON Formatter Works
- Installation: Add the package to your development environment via the CLI package manager.
- Validation: The parser scans the target JSON file to check for syntax compliance and integrity.
- Transformation: Depending on the specified command, the tool either applies pretty-printing with configurable indentation, sorts the object keys alphabetically, or strips out whitespaces to minify the file.
- Batch Processing: For multi-file operations, the utility sequentially parses and updates each designated file, outputting the optimized results.
JSON Formatter Setup
To get started with this addition to your Openclaw Skills workspace, install the package and run the formatting commands as needed:
# Install the JSON Formatter skill
clawdhub install king-json-formatter
# Format and pretty-print a JSON file
python3 main.py format data.json
# Minify a JSON file for production
python3 main.py minify data.json
# Validate JSON structure
python3 main.py validate data.json
JSON Formatter Data Schema & Taxonomy
The JSON Formatter skill works natively with any standard .json file formats. Below is an overview of the CLI commands and the expected outcomes:
| Command | Description | Input Format | Output Format |
|---|---|---|---|
format |
Pretty-prints JSON with clean indentation | Raw/Unformatted JSON | Human-readable, spaced JSON |
minify |
Compresses JSON by removing spaces/newlines | Any JSON file | Single-line compressed JSON |
validate |
Checks for syntax errors and validates schema | Any JSON file | Status message (Valid/Invalid) |
| Keys Sorting | Alphabetizes keys at each hierarchy level | Unsorted JSON | Sorted JSON structure |
It does not require complex local databases or remote metadata storage, operating directly on local file references.
JSON Formatter Advanced Features
- Automated Key Sorting: Automatically order object keys alphabetically during formatting to simplify version control tracking and code reviews.
- Batch Execution: Process multiple JSON files across entire directories simultaneously to ensure consistency across large projects.
- Agent-Friendly Diagnostics: Provides structured exit codes and descriptive error output, allowing other Openclaw Skills and agents to gracefully handle parse failures.
- Indentation Configuration: Tailor formatting configurations to match custom workspace conventions (e.g., 2-space vs. 4-space tabulations).
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