import type { Tool } from "ai";
import { type ToolCategory } from "./filter.ts";
export interface RouterOptions {
    /** All available tools */
    tools: Record<string, Tool>;
    /** Tool categories available for routing */
    categories?: ToolCategory[];
}
/**
 * Create a two-stage router. Returns a small set of routing tools.
 *
 * Stage 1: Agent sees only `select_tool_category` and `list_categories`.
 * Stage 2: After selecting a category, the relevant tools are returned.
 *
 * This is designed for use with the AI SDK's `prepareStep` callback.
 */
export declare function createRouter(opts: RouterOptions): {
    /** Router tools (give these to the agent in step 1) */
    routerTools: {
        select_tool_category: Tool<{
            categories: string[];
        }, {
            activated: ToolCategory[];
            availableTools: string[];
            count: number;
            message: string;
        }>;
        list_categories: Tool<Record<string, never>, {
            categories: Record<string, number>;
        }>;
    };
    /** Get the currently selected tools (use in prepareStep) */
    getSelectedTools(): Record<string, Tool>;
    /** Get selected categories */
    getSelectedCategories(): ToolCategory[];
    /** Reset selection */
    reset(): void;
};
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