/**
 * Extracts request parameters from OpenAI Chat Completions / Responses API requests
 * for span metadata and observability. Designed to support both APIs and be
 * extensible for future parameters.
 */
export interface ExtractedParameters {
    /** Extracted OpenAI parameters; all values stringified for Galileo metadata */
    metadata: Record<string, string>;
    /** Raw tools definitions for span tools field (if present) */
    tools?: Record<string, unknown>[];
}
/**
 * Get the OpenAI request arguments, including filtered metadata if distillation is enabled.
 *
 * When `store=true` (model distillation enabled):
 * - Includes caller metadata filtered for OpenAI compatibility
 * - Removes fields not allowed in OpenAI metadata (e.g., response_format)
 * - Converts types to OpenAI-compatible format (booleans → strings)
 * - Validates metadata is a plain object; throws TypeError if not (parity with galileo-python)
 *
 * When `store` is not true or missing:
 * - Returns request options unchanged
 */
export declare function getOpenAiArgs(requestData: Record<string, unknown>): Record<string, unknown>;
/**
 * Extract parameters from a request for logging. Handles both Chat Completions
 * (messages) and Responses API (input, instructions) shapes.
 * All metadata values are stringified since Galileo metadata is Record<string, string>.
 */
export declare function extractRequestParameters(request: Record<string, unknown>): ExtractedParameters;