import { Tool, JSONOutput, RunOptions } from "../core/Tool";
import { ExecutionContext } from "../core/ExecutionContext";
import { DatabaseProvider } from "../helpers";
import { z } from "zod";
import { Options } from "sequelize";
interface TableMetadata {
    tableName: string;
    columns: Array<{
        name: string;
        type: string;
    }>;
}
interface SQLResult {
    success: boolean;
    results?: any[];
    error?: string;
    metadata?: {
        rowCount: number;
        tables: TableMetadata[];
    };
}
interface SQLToolInput {
    query: string;
    params?: Record<string, any>;
}
interface SQLToolOptions {
    provider: DatabaseProvider;
    connection: Options;
    maxRows?: number;
    timeout?: number;
}
export declare class SQLTool extends Tool<SQLToolInput, JSONOutput<SQLResult>> {
    private sequelize;
    protected readonly options: SQLToolOptions;
    constructor(options: SQLToolOptions);
    schema(): z.ZodSchema<SQLToolInput>;
    private getConnection;
    private getDatabaseMetadata;
    private getMetadataQuery;
    private isReadOnlyQuery;
    protected execute(input: SQLToolInput, context: ExecutionContext, options: RunOptions): Promise<JSONOutput<SQLResult>>;
    destroy(): Promise<void>;
}
export {};