Schema from JSON

Paste one or more JSON samples: schiva writes the schema that accepts all of them. Everything runs in your browser.

How it reads the samples: a key is required when every sample has it, a value seen as null is nullable, the elements of arrays are merged, and strings get a format (date-time, email, uuid...) when all of them match it. More samples give a more accurate schema.

1 JSON samples

An array is a list of samples

Options

Reject unknown keys Detect formats Draft Import

2 Schema

From code: inferJsonSchema(samples, options) and inferSchemaCode(samples, options) (see Schemas from samples). The schema is a starting point: add the limits your data needs, such as lengths, ranges and patterns.