/**
 * Default constants and validators for agent configuration.
 */
import type { ThinkingLevel } from './core-types.js';
/** All recognized thinking levels, ordered from least to most reasoning. */
export declare const VALID_THINKING_LEVELS: readonly ["off", "minimal", "low", "medium", "high", "xhigh"];
/** Type guard: returns true if the string is a valid {@link ThinkingLevel}. */
export declare function isValidThinkingLevel(level: string): level is ThinkingLevel;
export declare const DEFAULT_THINKING_LEVEL: ThinkingLevel;
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