schema-validate

Validate JSON documents against a provided JSON Schema and report detailed errors.

3|Updated Jan 17, 2026

Search Tags:#typescript #validation #schema #cli #tooling #json #validator

Ready to run

npx skills add https://github.com/Mearman/marketplace --skill schema-validate

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: schema-validate
Source: https://github.com/Mearman/marketplace/tree/main/plugins/json-schema/skills/schema-validate
Command: npx skills add https://github.com/Mearman/marketplace --skill schema-validate

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

JSON data often arrives without validation against a schema, leading to runtime errors and data quality issues. This Skill provides fast, repeatable validation of JSON files against a defined schema to ensure correctness before processing.

Core Features & Use Cases

Validate a JSON file against a JSON Schema to confirm it conforms to the defined structure.
Generate helpful, structured error messages indicating failing paths and why validation failed.
Use in CI pipelines or tooling to enforce data contracts for config files, API payloads, and data exports.

Quick Start

Validate data.json against schema.json with a single command.

Frequently Asked Questions about schema-validate

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

FAQPage Schema

How do I validate a JSON file against a schema?▼

To validate a JSON file against a schema, you provide both the JSON document and the JSON Schema file. The validator then compares the data structure and reports detailed errors for any failing paths to ensure correctness before processing.

What are structured error messages for JSON schema validation?▼

Structured error messages for JSON schema validation indicate the exact failing paths within the document and explain why the validation failed. This helps developers quickly identify and fix data quality issues in config files or API payloads.

Can I use JSON schema validation in CI pipelines?▼

Yes, you can use JSON schema validation in CI pipelines and tooling to enforce data contracts. It provides fast, repeatable validation for config files, API payloads, and data exports to prevent runtime errors.

What is the best way to validate API responses against a JSON Schema?▼

The best way to validate API responses against a JSON Schema is to use a validator library that compares the document to the defined structure. This process confirms data conformance and outputs detailed errors for any mismatches.

Why do I need to provide a JSON Schema file for validation?▼

You need to provide a JSON Schema file for validation because it defines the expected structure, types, and constraints for your data. The validator uses this schema as the baseline to check your JSON document and report any structural deviations.