AI JSON Schema

Define fields and generate JSON Schema plus OpenAI structured-output config. All processing stays on your device.

Builds draft 2020-12 schemas with strict object rules suited for LLM structured outputs. Generated locally — your data stays private.

Property 1

Name

Type

Required

Enum values (comma-separated, optional)

Description (optional)

Output

Schema output appears here

Define fields on the left, then press Generate to create JSON Schema, OpenAI, and example JSON.

What is JSON mode or structured output?

It constrains an LLM to return JSON that matches a schema, making responses reliable and easy to parse.

Is the schema OpenAI-ready?

Yes. The tool produces configuration formatted for OpenAI structured outputs alongside standard JSON Schema.

Can I build a schema from existing JSON?

Yes. Import sample JSON to infer fields and types as a starting point.