pub(all) enum Content {
  Text(String)
  Image(String, String)
  Resource(String, String, String)
}

pub(all) enum LogLevel {
  Debug
  Info
  Notice
  Warning
  Error
  Critical
  Alert
  Emergency
}

type PromptArgument

pub(all) struct PromptMessage {
  role : Role
  message : Content
}

pub(all) struct Response {
  isError : Bool
  payload : Array[Content]
}

pub(all) enum Role {
  User
  Assistant
}

pub struct Root {
  uri : String
  name : String?
}

type Server

fn add_prompt(self : Server, name~ : String, description~ : String, arguments~ : Array[PromptArgument] = .., cb~ : (Map[String, Json]) -> Array[PromptMessage]) -> Unit

fn add_tool(self : Server, name~ : String, description~ : String, inputSchema~ : 
@peter-jerry-ye/mcp-server/schema.T
T, cb~ : (Json, Server) -> Response) -> Unit

fn list_roots(self : Server) -> Array[Root]!Error

fn log(self : Server, message : Json, level~ : LogLevel = ..) -> Unit

fn new(seed : Bytes) -> Server

fn prompt_argument(name : String, description? : String, required? : Bool) -> PromptArgument

fn remove_prompt(self : Server, name : String) -> Unit

fn remove_tool(self : Server, name : String) -> Unit

fn serve(self : Server, stdin~ : 
@peter-jerry-ye/async/stream.Reader
Reader, stdout~ : 
@peter-jerry-ye/async/stream.Writer
Writer, stderr~ : 
@peter-jerry-ye/async/stream.Writer
Writer) -> Unit