# call(_:params:) Returns raw JSON-RPC response data. Caller decodes as needed. ``` func call(_ method: String, params: [RPCParam] = []) async throws -> Data ``` ## Parameters `method` The RPC method name. `params` The parameters to pass to the RPC method. ## Return Value The raw response `Data`. ## Discussion Rare use case (<1% of calls) — typed methods cover ~94 RPCs. > Throws: `RPCError` if the response contains a JSON-RPC error, > or transport errors.