Which JSON Schema versions are supported?

The skill supports JSON Schema Draft-04, Draft-06, Draft-07, 2019-09, and 2020-12. It can automatically detect the version or allow manual specification.

What does the --strict flag do?

The strict flag enables additional rules, such as disallowing unknown keywords, requiring the $schema declaration, and enforcing format assertions.

Can this skill help fix invalid schemas?

Yes, by providing specific error paths and descriptive messages (e.g., 'type must be a string'), it helps Claude identify and fix structural errors in your schema files.

What is the difference between this and regular schema validation?

Regular validation (schema-validate) checks if data matches a schema. This meta-validator (schema-meta) checks if the schema itself is correctly written according to JSON Schema standards.

JSON Schema Meta-Validator

Name: JSON Schema Meta-Validator
Author: Mearman

byMearman

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API Development

Validates JSON Schema documents against official specifications to ensure structural integrity and syntax compliance.

The JSON Schema Meta-Validator skill provides Claude with the specialized ability to verify that JSON Schema files are well-formed and strictly conform to official draft specifications. It supports a wide range of versions, from Draft-04 to 2020-12, and includes a strict mode for identifying non-standard keywords or missing declarations. This skill is indispensable for developers building APIs, data models, or configuration systems, ensuring that the schemas defining their data are technically sound before they are deployed or used for data validation.

Key Features

01Detailed error reporting with specific paths to invalid schema properties.

02Automatic detection of JSON Schema draft versions via the $schema keyword.

032 GitHub stars

04Support for multiple drafts including 04, 06, 07, 2019-09, and 2020-12.

05Verbose output options for deep inspection of schema keywords and definitions.

06Strict mode validation to catch unknown keywords and missing schema declarations.

Use Cases

01Auditing legacy schemas to ensure they meet modern draft standards.

02Verifying a newly authored JSON Schema before using it in production systems.

03Debugging complex schema files with nested definitions and references.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add mearman/marketplace schema-meta

For use in Claude.ai and ChatGPT

Download Skill