@@ -21,7 +21,8 @@
 		}
 	},
 	"supports": {
-		"align": true
+		"align": true,
+		"autoRegister": true
 	},
 	"styles": [
 		{
 
@@ -226,6 +226,11 @@
 					"type": "boolean",
 					"default": false
 				},
+				"autoRegister": {
+					"description": "Allows PHP-only blocks with a `render_callback` to appear in the block editor without JavaScript registration. The editor renders them with `ServerSideRender`. If a block uses an API version older than 3, or does not specify one, the editor uses version 3.",
+					"type": "boolean",
+					"default": false
+				},
 				"align": {
 					"description": "This property adds block controls which allow to change block’s alignment.",
 					"oneOf": [
 
@@ -14,6 +14,10 @@ describe( 'block.json schema', () => {
 		[ 'packages/*/src/**/block.json', '{lib,phpunit,test}/**/block.json' ],
 		{ onlyFiles: true }
 	);
+	const invalidFiles = glob.sync(
+		[ 'test/integration/fixtures/block-schemas/*.json' ],
+		{ onlyFiles: true }
+	);
 	const ajv = new Ajv();
 
 	test( 'strictly adheres to the draft-07 meta schema', () => {
@@ -40,4 +44,15 @@ describe( 'block.json schema', () => {
 
 		expect( result ).toBe( true );
 	} );
+
+	test.each( invalidFiles )(
+		'rejects invalid block metadata in `%s`',
+		( filepath ) => {
+			const { $schema, ...blockMetadata } = require( filepath );
+
+			const result = ajv.validate( blockSchema, blockMetadata );
+
+			expect( result ).toBe( false );
+		}
+	);
 } );
@@ -0,0 +1,9 @@
+{
+	"$schema": "../../../../schemas/json/block.json",
+	"apiVersion": 3,
+	"name": "my-plugin/invalid-auto-register",
+	"title": "Invalid auto-registration",
+	"supports": {
+		"autoRegister": "yes"
+	}
+}
Original file line number	Diff line number	Diff line change
`@@ -21,7 +21,8 @@`
`21`	`21`	`}`
`22`	`22`	`},`
`23`	`23`	`"supports": {`
`24`		`- "align": true`
	`24`	`+ "align": true,`
	`25`	`+ "autoRegister": true`
`25`	`26`	`},`
`26`	`27`	`"styles": [`
`27`	`28`	`{`