MCP-Web Tools API

BaseTool<TInput, TOutput>

Class — packages/tools/src/base.ts

Abstract base class for creating reusable MCP tools.

Extend this class to create tools that can be shared across projects. Subclasses must implement all abstract properties: name, description, inputSchema, outputSchema, and handler.

Accessors:

get name(): string

Unique name for the tool.

get description(): string

Description of what the tool does (shown to AI).

get inputSchema(): TInput | undefined

Zod schema for validating input parameters.

get outputSchema(): TOutput

Zod schema for validating output values.

get handler(): (params: z.infer<TInput>) => z.infer<TOutput> | Promise<z.infer<TOutput>>

Function that executes the tool logic.

get definition(): ToolDefinition

Returns the tool definition for registration with MCPWeb.