import { z } from 'zod';
import type { AnthropicToolDef, ToolHandler, ToolHandlerContext } from './types.js';
export interface CustomToolDef {
    schema: AnthropicToolDef;
    handler: ToolHandler;
}
export declare function tool<S extends z.ZodType>(name: string, description: string, schema: S, handler: (input: z.infer<S>, signal: AbortSignal, context?: ToolHandlerContext) => ReturnType<ToolHandler>): CustomToolDef;