/**
 * Describes a single property on a model for GenAI hydration.
 */
export interface ModelPropertySchema {
    readonly name: string;
    readonly type: 'string' | 'number' | 'boolean' | 'array' | 'object';
    readonly description: string;
    readonly required: boolean;
    readonly default?: unknown;
    readonly items?: ModelPropertySchema;
}
/**
 * Describes a model's schema for GenAI prompt generation and response hydration.
 * Replaces PHP Reflection + Attributes with an explicit registry.
 */
export interface ModelSchema {
    readonly key: string;
    readonly name: string;
    readonly description: string;
    readonly properties: ModelPropertySchema[];
}
/**
 * Registry for model schemas used by GenAI NodeCodes.
 * Models are registered at bootstrap time and referenced by key.
 */
export declare class ModelSchemaRegistry {
    private schemas;
    register(schema: ModelSchema): void;
    get(key: string): ModelSchema;
    has(key: string): boolean;
    getAll(): ModelSchema[];
    /**
     * Generate a JSON Schema-like prompt description for a model.
     */
    toPromptText(key: string): string;
}
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