import { TDTrinoClient } from '../client/trino';
import { AuditLogger } from '../security/audit-logger';
export interface ColumnInfo {
    column_name: string;
    data_type: string;
    is_nullable: boolean;
}
export interface DescribeTableResult {
    columns: ColumnInfo[];
}
/**
 * MCP tool for describing table schema
 */
export declare class DescribeTableTool {
    private readonly client;
    private readonly auditLogger;
    constructor(client: TDTrinoClient, auditLogger: AuditLogger);
    /**
     * Gets column information for a specific table
     * @param database - Database name
     * @param table - Table name
     * @returns Object containing array of column information
     * @throws {Error} If parameters are invalid or query fails
     */
    execute(database: string, table: string): Promise<DescribeTableResult>;
}
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