import { McpToolResponse } from "./types";
/**
 * Recursively removes specified keys from an object.
 */
export declare function stripInternalKeys(obj: unknown, keys?: string[]): unknown;
/**
 * Recursively converts numeric Unix timestamp fields to ISO 8601 strings.
 * Targets fields ending in `_at`, `_date`, or named exactly `created` or `date`.
 */
export declare function convertTimestamps(obj: unknown): unknown;
/**
 * Composes stripInternalKeys and convertTimestamps to produce a cleaned
 * Stripe response optimized for LLM consumption.
 */
export declare function transformStripeResponse(data: unknown): unknown;
/**
 * Transforms Stripe data and wraps it in the MCP tool response format.
 * Optionally prepends an action message to provide context for write operations.
 */
export declare function formatMcpResponse(data: unknown, actionMessage?: string): McpToolResponse;
/**
 * Wraps an error in the MCP tool error response format.
 */
export declare function formatMcpError(error: unknown): McpToolResponse;