import { type AnyDefinedTool } from "../agent/types.js";
import type { ExternalToolCallResolution, ExternalToolDefinition } from "./types.js";
export declare function createExternalTool(options: {
    definition: ExternalToolDefinition;
    invoke: (request: {
        arguments: unknown;
        batchId: string;
        providerToolCallId?: string;
        toolCallId: string;
        toolCallIndex: number;
    }, signal?: AbortSignal) => Promise<ExternalToolCallResolution>;
}): AnyDefinedTool;