Struct ToolServer 

pub struct ToolServer { /* private fields */ }

MCP tool server that registers DynTool implementations and serves them over stdio.

Implements rmcp’s ServerHandler to handle list_tools and call_tool MCP methods.

Implementations

impl ToolServer

pub fn new(tools: Vec<Box<dyn DynTool>>) -> Self

Create a new server from a list of tools, registering each by name.

pub async fn serve_stdio(self) -> Result<(), Box<dyn Error>>

Run the MCP server over stdin/stdout until the client disconnects.

pub fn build_tool_list(&self) -> Vec<RmcpTool>

Convert all registered tools into rmcp RmcpTool descriptors for list_tools.

D-03: input_schema() returns serde_json::Value (JSON Schema has no fixed Rust type), so the conversion to rmcp’s Map<String, Value> is inherently Value-based.

pub async fn dispatch_tool( &self, name: &str, arguments: Option<Map<String, Value>>, ) -> Result<CallToolResult, McpError>

Dispatch a tool call by name, returning an MCP CallToolResult.

Returns an MCP protocol error only for unknown tool names; execution failures are returned as CallToolResult::error (content-level).

D-03: arguments is Map<String, Value> from rmcp’s CallToolRequestParam — tool input shape is defined by the tool’s JSON Schema, not a static Rust type. The conversion to Value::Object and pattern matching on Value::String in the result both flow from the Tool trait being Value-based (D-03).

Trait Implementations

impl ServerHandler for ToolServer

fn get_info(&self) -> ServerInfo

async fn list_tools( &self, _request: Option<PaginatedRequestParams>, _context: RequestContext<RoleServer>, ) -> Result<ListToolsResult, McpError>

async fn call_tool( &self, request: CallToolRequestParams, _context: RequestContext<RoleServer>, ) -> Result<CallToolResult, McpError>

fn enqueue_task( &self, _request: CallToolRequestParams, _context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<CreateTaskResult, ErrorData>> + MaybeSendFuture

fn ping( &self, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<(), ErrorData>> + MaybeSendFuture

fn initialize( &self, request: InitializeRequestParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<InitializeResult, ErrorData>> + MaybeSendFuture

fn complete( &self, request: CompleteRequestParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<CompleteResult, ErrorData>> + MaybeSendFuture

fn set_level( &self, request: SetLevelRequestParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<(), ErrorData>> + MaybeSendFuture

fn get_prompt( &self, request: GetPromptRequestParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<GetPromptResult, ErrorData>> + MaybeSendFuture

fn list_prompts( &self, request: Option<PaginatedRequestParams>, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<ListPromptsResult, ErrorData>> + MaybeSendFuture

fn list_resources( &self, request: Option<PaginatedRequestParams>, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<ListResourcesResult, ErrorData>> + MaybeSendFuture

fn list_resource_templates( &self, request: Option<PaginatedRequestParams>, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<ListResourceTemplatesResult, ErrorData>> + MaybeSendFuture

fn read_resource( &self, request: ReadResourceRequestParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<ReadResourceResult, ErrorData>> + MaybeSendFuture

fn subscribe( &self, request: SubscribeRequestParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<(), ErrorData>> + MaybeSendFuture

fn unsubscribe( &self, request: UnsubscribeRequestParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<(), ErrorData>> + MaybeSendFuture

fn get_tool(&self, _name: &str) -> Option<Tool>

Get a tool definition by name.

fn on_custom_request( &self, request: CustomRequest, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<CustomResult, ErrorData>> + MaybeSendFuture

fn on_cancelled( &self, notification: CancelledNotificationParam, context: NotificationContext<RoleServer>, ) -> impl Future<Output = ()> + MaybeSendFuture

fn on_progress( &self, notification: ProgressNotificationParam, context: NotificationContext<RoleServer>, ) -> impl Future<Output = ()> + MaybeSendFuture

fn on_initialized( &self, context: NotificationContext<RoleServer>, ) -> impl Future<Output = ()> + MaybeSendFuture

fn on_roots_list_changed( &self, context: NotificationContext<RoleServer>, ) -> impl Future<Output = ()> + MaybeSendFuture

fn on_custom_notification( &self, notification: CustomNotification, context: NotificationContext<RoleServer>, ) -> impl Future<Output = ()> + MaybeSendFuture

fn list_tasks( &self, request: Option<PaginatedRequestParams>, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<ListTasksResult, ErrorData>> + MaybeSendFuture

fn get_task_info( &self, request: GetTaskInfoParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<GetTaskResult, ErrorData>> + MaybeSendFuture

fn get_task_result( &self, request: GetTaskResultParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<GetTaskPayloadResult, ErrorData>> + MaybeSendFuture

fn cancel_task( &self, request: CancelTaskParams, context: RequestContext<RoleServer>, ) -> impl Future<Output = Result<CancelTaskResult, ErrorData>> + MaybeSendFuture