/**
 * PostgreSQL Performance Tools - Query Statistics
 *
 * pg_stat_statements, pg_stat_activity, and query plan stats tools.
 */
import type { PostgresAdapter } from "../../postgres-adapter.js";
import type { ToolDefinition } from "../../../../types/index.js";
export declare function createStatStatementsTool(adapter: PostgresAdapter): ToolDefinition;
export declare function createStatActivityTool(adapter: PostgresAdapter): ToolDefinition;
export declare function createQueryPlanStatsTool(adapter: PostgresAdapter): ToolDefinition;
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