core.json

{
    "$schema": "http://json-schema.org/draft-08/schema#",
    "$id": "https://json-schema.org/draft-08/core",
    "$recursiveAnchor": true,
    "$vocabulary": {
        "https://json-schema.org/draft-08/vocabularies/core": true
    },

    "title": "Core vocabulary meta-schema",
    "type": ["object", "boolean"],
    "properties": {
        "$id": {
            "type": "string",
            "format": "uri-reference"
        },
        "$schema": {
            "type": "string",
            "format": "uri"
        },
        "$ref": {
            "type": "string",
            "format": "uri-reference"
        },
        "$recursiveRef": {
            "type": "string",
            "format": "uri-reference"
        },
        "$recursiveAnchor": {
            "type": "boolean",
            "const": true,
            "default": false
        },
        "$vocabulary": {
            "type": "object",
            "propertyNames": {
                "type": "string",
                "format": "uri"
            },
            "additionalProperties": {
                "type": "boolean"
            }
        },
        "$comment": {
            "type": "string"
        },
        "$defs": {
            "type": "object",
            "additionalProperties": { "$recursiveRef": "#" },
            "default": {}
        }
    }
}