WordPress/wp-includes/blocks/tag-cloud/block.json

{
	"$schema": "https://schemas.wp.org/trunk/block.json",
	"apiVersion": 2,
	"name": "core/tag-cloud",
	"title": "Tag Cloud",
	"category": "widgets",
	"description": "A cloud of your most used tags.",
	"textdomain": "default",
	"attributes": {
		"numberOfTags": {
			"type": "number",
			"default": 45,
			"minimum": 1,
			"maximum": 100
		},
		"taxonomy": {
			"type": "string",
			"default": "post_tag"
		},
		"showTagCounts": {
			"type": "boolean",
			"default": false
		},
		"smallestFontSize": {
			"type": "string",
			"default": "8pt" 
		},
		"largestFontSize": {
			"type": "string",
			"default": "22pt"
		}
	},
	"styles": [
		{ "name": "default", "label": "Default", "isDefault": true },
		{ "name": "outline", "label": "Outline" }
	],
	"supports": {
		"html": false,
		"align": true
	},
	"editorStyle": "wp-block-tag-cloud-editor"
}