JSON Schema Drafter for Openclaw

A CLI-driven utility for inferring and drafting JSON Schema structures from raw JSON sample files.

askjda
v1.0.0
Apr 8, 2026
0
543
0

Install & Download

1. ClawHub CLI

The fastest way to install a skill directly from the registry.

npx clawhub@latest install json-schema-drafter

2. Manual Installation

Copy the skill folder to one of these locations

Global
~/.openclaw/skills/
Workspace
<project>/skills/

Priority: Workspace > Local > Bundled

3. Prompt Installation

Copy this prompt to OpenClaw to install it automatically.

Help me install json-schema-drafter 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 Schema Drafter?

JSON Schema Drafter is a specialized tool designed to streamline the data modeling process for developers. By analyzing raw JSON samples, it automatically generates structured schema drafts, significantly reducing manual effort in defining data contracts. As part of the Openclaw Skills collection, it provides a reliable, non-interactive command-line interface for rapid schema prototyping and data structure analysis.

JSON Schema Drafter Use Cases

  • Rapidly prototyping data models from raw JSON samples
  • Automating schema generation for API development using Openclaw Skills
  • Standardizing data validation across legacy JSON datasets
  • Integrating structure inference into automated development workflows

How JSON Schema Drafter Works

  1. The user provides a sample JSON file containing the target data structure to the tool.
  2. The script parses the input file to identify data types, nesting levels, and key names.
  3. A draft schema is constructed based on the inferred types such as strings, integers, objects, and arrays.
  4. The resulting schema is written to a designated output file and summarized via standard output.
  5. Developers can then refine the generated draft for specific validation constraints within the Openclaw Skills ecosystem.

JSON Schema Drafter Setup

To set up this tool, ensure you have a Python environment ready. Follow these steps:

# 1. Prepare your input data (e.g., sample.json) in the skill directory
# 2. Run the drafting command
python main.py --input sample.json --output schema.json

# 3. If you need to see all available options, use the help flag
python main.py --help

JSON Schema Drafter Data Schema & Taxonomy

The skill manages data through a simple input-output mapping as detailed below:

Component Format Description
Input JSON A sample data file (e.g., input.json) used as the source for inference.
Output JSON/TXT The generated schema draft containing structural metadata.
Logs stdout Real-time feedback on the drafting process and field counts.

JSON Schema Drafter Advanced Features

  • Headless CLI integration perfect for automated Openclaw Skills pipelines
  • Support for both JSON and TXT output formats to suit different documentation needs
  • Explicit boundary control to prevent implicit operations or unauthorized data access
  • Detailed parameter validation through built-in help documentation

SKILL.md


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