import { BaseTool, ToolParams } from "../base/tool.js";
export interface AggregateParams extends ToolParams {
    database: string;
    collection: string;
    pipeline: string;
}
export declare class AggregateTool extends BaseTool<AggregateParams> {
    name: string;
    description: string;
    inputSchema: {
        type: "object";
        properties: {
            database: {
                type: string;
                description: string;
            };
            collection: {
                type: string;
                description: string;
            };
            pipeline: {
                type: string;
                description: string;
                default: {};
            };
        };
        required: string[];
    };
    protected parsePipeline(pipeline: string): Array<unknown>;
    protected validatePipeline(pipeline: unknown): Array<unknown>;
    execute(params: AggregateParams): Promise<import("../base/tool.js").ToolResponse>;
}