/**
 * Shared API request body builder.
 * Constructs a request object from required fields and optional parameters,
 * omitting undefined values automatically.
 */
/**
 * Build an API request body by merging required fields with optional parameters.
 * Undefined values in optionalParams are automatically excluded.
 *
 * @param requiredFields - Fields that are always included in the request
 * @param optionalParams - Fields that are included only if defined
 * @param excludeKeys - Keys to exclude from optionalParams (e.g., "response_format")
 * @returns A flat record suitable for passing to client.post()
 */
export declare function buildApiRequest(requiredFields: Record<string, unknown>, optionalParams: Record<string, unknown>, excludeKeys?: string[]): Record<string, unknown>;