import { z } from 'zod';
/** PostgreSQL connection string */
export declare const ConnectionStringSchema: z.ZodEffects<z.ZodString, string, string>;
/** SQL identifier (table, column, schema name) — prevents injection */
export declare const IdentifierSchema: z.ZodString;
/** Schema name with default */
export declare const SchemaSchema: z.ZodDefault<z.ZodString>;
/** Positive integer for LIMIT */
export declare const LimitSchema: z.ZodDefault<z.ZodNumber>;
/** Boolean that accepts string "true"/"false" from MCP protocol */
export declare const CoercedBooleanSchema: z.ZodEffects<z.ZodBoolean, boolean, unknown>;
/** Confirm parameter for destructive operations */
export declare const ConfirmSchema: z.ZodEffects<z.ZodEffects<z.ZodBoolean, boolean, unknown>, boolean, unknown>;
//# sourceMappingURL=validation.d.ts.map