# jsonrpc Convenience functions for values from @polkadot/api-jsonrpc - [jsonrpcSignature](#jsonrpcsignature) Returns a string representation of the method with inputs and outputs. ## jsonrpcSignature Returns a string representation of the method with inputs and outputs. ```js jsonrpcSignature (name: string, _inputs: Array, _output: InterfaceOutputType): string ``` Formats the name, inputs and outputs into a human-readable string. This contains the input parameter names, input types and output type. ```js import { jsonrpcSignature } from '@polkadot/util'; console.log(jsonrpcSignature( 'test_method', [{ name: 'dest', type: 'Address' }], { type: 'Address' } )); // => test_method (destination: Address): Address ```