import { BaseRetrievalTool, RetrievalToolOptions } from './BaseRetrievalTool';
import { ToolContext } from '../ToolContext';
/**
 * Options for creating a LlamaIndex retrieval tool
 */
export interface LlamaIndexRetrievalOptions extends RetrievalToolOptions {
    /**
     * The LlamaIndex retriever to use
     */
    retriever: any;
}
/**
 * Retrieval tool that uses LlamaIndex to retrieve information
 */
export declare class LlamaIndexRetrieval extends BaseRetrievalTool {
    /**
     * The LlamaIndex retriever
     */
    private retriever;
    /**
     * Create a new LlamaIndex retrieval tool
     *
     * @param options Options for the LlamaIndex retrieval tool
     */
    constructor(options: LlamaIndexRetrievalOptions);
    /**
     * Retrieve information using LlamaIndex
     *
     * @param query The query to retrieve information for
     * @param maxResults Maximum number of results to return
     * @param context The context for the retrieval
     * @returns The retrieved information
     */
    protected retrieve(query: string, maxResults: number, context: ToolContext): Promise<string>;
}