What can I paste?
Paste valid JSON, a field list or a short description of the API object you want to validate.
AI tool
AI JSON Schema Generator
Generate JSON Schema from sample JSON, field notes or plain-English API requirements.
Common use cases
- Turn rough notes or model output into structured data.
- Review AI-generated JSON before using it.
- Create schemas, mock data and regex drafts faster.
Example input
A user profile object with id, email, display name, plan, signup date and an array of feature flags.Related tools
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JSONFreeFAQ
Is the schema ready for production?
It is a strong first draft. Review required fields, formats and enums before production validation.
Does this use AI?
Valid JSON can be converted locally. Natural-language requirements use the configured AI API.