Draft 2019-09 (formerly known as Draft 8)

Supported: Yes
Specification

General use

JSON Schema meta-schema

keywords	supported	notes
`definitions`	yes	It is suggested to use `$defs` instead
`dependencies`	no

JSON Hyper-Schema Link Description Object meta-schema

keywords	supported
`rel`	no
`href`	no

Individual Vocabulary

Core Vocabulary meta-schema

keywords	supported	required	acceptable values	notes
`$id`	yes	yes		Used as identification in the `MessageSystem` as the `schemaDictionary`
`$schema`	yes	yes	`"https://json-schema.org/draft/2019-09/schema"`
`$anchor`	no
`$ref`	yes		Only references to the relative schemas `$def` property
`$recursiveRef`	no
`$recursiveAnchor`	no
`$vocabulary`	no
`$comment`	no
`$defs`	yes

Applicator Vocabulary meta-schema

keywords	associated type	supported	`<form>` notes
`additionalItems`	`"array"`	no
`unevaluatedItems`	`"array"`	no
`items`	`"array"`	yes
`contains`	`"array"`	no
`additionalProperties`	`"object"`	yes
`unevaluatedProperties`	`"object"`	no
`properties`	`"object"`	yes
`patternProperties`	`"object"`	no
`dependentSchemas`		no
`propertyNames`	`"object"`	no
`if`		no
`then`		no
`else`		no
`not`		no
`oneOf`		yes	Generates a `<select>`
`anyOf`		yes	Generates a `<select>`
`allOf`		no

Validation Vocabulary meta-schema

keywords	associated type	supported	required	acceptable values	`<form>` notes
`multipleOf`	`"number"`	yes			Converts to the `<input>` `step` attribute
`maximum`	`"number"`	yes			Converts to the `<input>` `max` attribute
`exclusiveMaximum`	`"number"`	no
`minimum`	`"number"`	yes			Converts to the `<input>` `min` attribute
`exclusiveMinimum`	`"number"`	no
`maxLength`	`"string"`	no
`minLength`	`"string"`	no
`pattern`	`"string"`	no
`minItems`	`"array"`	yes
`maxItems`	`"array"`	yes
`uniqueItems`	`"array"`	no
`minContains`	`"array"`	no
`maxContains`	`"array"`	no
`maxProperties`	`"object"`	no
`minProperties`	`"object"`	no
`required`	`"object"`	yes			Converts to the form elements `required` attribute
`dependentRequired`	`"object"`	no
`const`	all
`enum`	all				Converts form elements to a `<select>`
`type`		yes	yes	`"string" \| "number" \| "array" \| "object" \| "boolean" \| "null"`	Generates form elements e.g. `"boolean"` converts to `<input type="checkbox">`

Format Vocabulary meta-schema

keywords	supported
`format`	no

Content Vocabulary meta-schema

keywords	supported
`contentMediaType`	no
`contentEncoding`	no
`contentSchema`	no

Meta-Data Vocabulary meta-schema

keywords	supported	`<form>` notes
`title`	yes	Converts to a `<label>`
`description`	yes	Converts to a `title` attribute which creates a native tooltip
`default`	yes	Displays in the form element if no value is assigned
`deprecated`	yes
`readOnly`	yes
`writeOnly`	yes
`examples`	yes

Hyper-Schema Vocabulary meta-schema

keywords	supported
`base`	no
`links`	no