param.json

{
    "$schema": "http://json-schema.org/draft-04/schema#",

    "title": "Parameter",
    "description": "Name of the parameter as used in artifacts",
    "type": "object",
    "required": [ "name", "description" ],
    "properties": {
        "name": {
            "description": "",
            "type": "string",
            "default": "null"
        },
        "description": {
            "description": "A human readable description of the parameter.",
            "type": "string",
            "default": "null"
        },
        "constraints": {
            "$ref": "file:constraint.json"
        },
        "default": {
            "description": "An optional default value for the parameter.",
            "type": "string",
            "default": "null"
        },
        "hidden": {
            "description": "An optional boolean signifying the parameter should be obscured when displayed.",
            "type": "boolean",
            "default": false
        }
    }
}