🥮 mooncakes.io
README

colmugx/mcp/protocol/tool does not have a README file

#
ToToolResult

source
pub trait ToToolResult {
  fn to_tool_result(Self) -> ToolResult
}

Trait for types that can be converted to ToolResult
impl ToToolResult for Int

#
Tool

source
pub(open) trait Tool {
  fn name(Self) -> String
  fn description(Self) -> String
  fn params(Self) -> Array[ParamDef]
  async fn execute(Self, Json) -> ToolCallOutcome
}

Core Tool trait following MCP protocol

#
ParamDef

source
pub(all) struct ParamDef {
  name : String
  description : String
  type_ : String
  required : Bool
} derive(Eq, 
Debug)

Parameter definition for tool schema

#
ToolCallOutcome

source
pub(all) enum ToolCallOutcome {
  Complete(ToolResult)
  InputRequired(input_requests~ : Map[String, 
InputRequestEntry], state~ : Json)
} derive(Eq, 
Debug)

Outcome of a tool execution. Per the 2026-07-28 MRTR pattern, a tool may either complete normally (Complete) or request additional client input (InputRequired). On retry, the client resubmits with inputResponses and the echoed requestState; the tool then receives those responses via its arguments and returns Complete.

#
ToolResult

source
pub struct ToolResult {
  content : Array[
ContentItem]
  is_error : Bool
} derive(Eq, 
Debug)

Tool execution result following MCP protocol format

#
ToolResult::error

source
fn ToolResult::error(message : String) -> ToolResult

Create an error result with error message

#
ToolResult::success

source

Create a successful result with multiple content items

#
ToolResult::text

source
fn ToolResult::text(text : String) -> ToolResult

Create a successful result with text content

#
get_number

source
fn get_number(json : Json, key : String) -> Result[Double, ToolResult]

Extract number from JSON, returning error ToolResult on failure

#
get_optional_number

source
fn get_optional_number(json : Json, key : String) -> Result[Double?, ToolResult]

Extract optional number from JSON

#
get_optional_string

source
fn get_optional_string(json : Json, key : String) -> Result[String?, ToolResult]

Extract optional string from JSON

#
get_string

source
fn get_string(json : Json, key : String) -> Result[String, ToolResult]

Extract string from JSON, returning error ToolResult on failure

Source Files

Powered by MoonBit

Site sourceReport issuePackagesBuild queueSkillsStatistics

© 2026 mooncakes.io