json-schema-author

Author and validate JSON Schema contracts for configuration files and API payloads.

3|2|Updated Jun 9, 2026
One-click install
npx skills add https://github.com/JayRHa/AgentSkills --skill json-schema-author
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: json-schema-author
Source: https://github.com/JayRHa/AgentSkills/tree/main/json-schema-author
Command: npx skills add https://github.com/JayRHa/AgentSkills --skill json-schema-author

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This skill helps you design, author, and validate JSON Schemas (Draft 2020-12 and Draft-07) for configuration files and HTTP/REST APIs, enabling precise typing, constraints, and human-friendly error messages.

Core Features & Use Cases

  • Schema authoring templates and guidance for config schemas and API schemas.
  • Linting and meta-schema validation, plus example data validation to ensure schemas behave as intended.
  • Reusable patterns and $defs usage to promote consistency across projects and OpenAPI components.

Quick Start

Draft a strict JSON Schema for a simple API config and test it against a sample payload.

Frequently Asked Questions about json-schema-author

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

FAQPage Schema
How do I design and validate a JSON Schema for API payloads?

To design and validate a JSON Schema for API payloads, you define strict typing, constraints, and conditional logic using Draft 2020-12 or Draft-07. This ensures structure enforcement and generates human-friendly error messages for invalid data.

What is the best way to enforce JSON Schema contracts for configuration files?

The best way to enforce JSON Schema contracts for configuration files is authoring schemas with precise typing and constraints. Using linting and meta-schema validation verifies that your config schemas behave as intended against sample payloads.

Can I use JSON Schema $defs for reusable OpenAPI components?

Yes, you can use JSON Schema $defs for reusable OpenAPI components. Defining reusable patterns and $defs promotes consistency across your projects, ensuring shared structures validate correctly within your API workflows.

Does this JSON Schema authoring approach support Draft 2020-12 and Draft-07?

Yes, this JSON Schema authoring approach fully supports both Draft 2020-12 and Draft-07. It applies schemas to govern structure, validation, and error messaging across OpenAPI, config files, and data interchange formats.

How do I add custom error messages to JSON Schema validation?

You add custom error messages to JSON Schema validation by applying curated error messaging techniques during schema design. This allows your config and API schemas to output human-friendly errors instead of default validation failures.

Why use JSON Schema for OpenAPI data validation instead of plain types?

You use JSON Schema for OpenAPI data validation because it satisfies requirements for precise typing, keywords, $defs, and conditional logic. It governs structure, validates interchange data, and provides curated error messaging beyond plain types.