login/node_modules/json-schema/draft-03/examples/interfaces

{
    "extends":"http://json-schema.org/hyper-schema",
    "description":"A schema for schema interface definitions that describe programmatic class structures using JSON schema syntax",
    "properties":{
        "methods":{
            "type":"object",
            "description":"This defines the set of methods available to the class instances",
            "additionalProperties":{
            	"type":"object",
            	"description":"The definition of the method",
            	"properties":{
            		"parameters":{
            			"type":"array",
            			"description":"The set of parameters that should be passed to the method when it is called",
            			"items":{"$ref":"#"},
            			"required": true
            		},
            		"returns":{"$ref":"#"}
            	}
            }
        }    
    }
}