/**
 * Type-safe argument parsers for tool handlers.
 *
 * Replaces raw `args.x as number` casts with runtime-validated accessors.
 * Each function checks the actual runtime type before returning, eliminating
 * the risk of silent type mismatches propagated by `as` casts.
 */
export declare function getString(args: Record<string, unknown>, key: string): string | undefined;
export declare function requireString(args: Record<string, unknown>, key: string): string;
export declare function getNumber(args: Record<string, unknown>, key: string): number | undefined;
export declare function requireNumber(args: Record<string, unknown>, key: string): number;
export declare function getBoolean(args: Record<string, unknown>, key: string, defaultVal?: boolean): boolean;
export declare function getStringArray(args: Record<string, unknown>, key: string): string[] | undefined;
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