/**
 * @license
 * Copyright 2026 Steven Roussey <sroussey@gmail.com>
 * SPDX-License-Identifier: Apache-2.0
 */
export type ResponseFormat = "text" | "markdown";
/**
 * Returns a system-prompt addendum instructing the model how to format its
 * reply. Returns an empty string for plain text or when no format is
 * specified, so callers can unconditionally concatenate the result.
 */
export declare function buildResponseFormatAddendum(format: ResponseFormat | undefined): string;
/**
 * Directive for inline citation style when KB context is provided to the
 * model. Instructs the model to use Markdown links instead of numeric
 * footnotes so citations render naturally inside streamed Markdown.
 */
export declare const KB_INLINE_CITATION_DIRECTIVE: string;
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