servers.schema.json

{
    "type": "array",
    "uniqueItems": true,
    "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["id", "name", "addresses"],
        "properties": {
            "id": {
                "type": "string",
                "pattern": "^[a-z0-9_.-]+$"
            },
            "name": {
                "type": "string"
            },
            "addresses": {
                "type": "array",
                "uniqueItems": true,
                "items": {
                    "type": "string",
                    "pattern": "^[a-z0-9_.-]+$"
                }
            }
        }
    }
}