Type Alias ToolHandler<TArgs, TExtra>

ToolHandler: (args: TArgs, extra: TExtra) => Promise<CallToolResult>

Tool handler signature with generic support for middleware.

Type Parameters

TArgs = unknown
Tool arguments type (default: unknown for SDK compatibility)
TExtra = RequestHandlerExtra<ServerRequest, ServerNotification>
Request handler extra type (default: RequestHandlerExtra from SDK)

Defaults provide SDK-extracted types for compatibility with MCP SDK. Generic parameters enable type-safe middleware transformation.

Type Declaration

- (args: TArgs, extra: TExtra): Promise<CallToolResult>
- Parameters
  - args: TArgs
  - extra: TExtra
  Returns Promise<CallToolResult>