/**
 * Shared credential / endpoint resolution for the ByteDance (Volcengine Ark) plugin.
 *
 * This plugin uses the **Volcengine Ark Agent Plan** product surface, which has
 * two independent API surfaces:
 *
 * 1. **Vision (image understanding)** — OpenAI-compatible Chat Completions:
 *      Endpoint: ${ARK_BASE_URL}/chat/completions
 *      Auth:     Authorization: Bearer ${ARK_API_KEY}
 *      Default:  https://ark.cn-beijing.volces.com/api/plan/v3
 *
 * 2. **Web search (Harness "AskEcho Search Infinity")** — separate service
 *    with its own quota and its own API key:
 *      Endpoint: ${ARK_SEARCH_BASE_URL}/search_api/web_search
 *      Auth:     Authorization: Bearer ${ARK_SEARCH_API_KEY}
 *      Default:  https://open.feedcoopapi.com
 *
 * Both keys are read at runtime from configuration or environment variables
 * — this plugin **never bundles any credentials**.
 */
export declare const DEFAULT_ARK_BASE_URL = "https://ark.cn-beijing.volces.com/api/plan/v3";
export declare const ARK_API_KEY_ENV_VARS: readonly ["ARK_API_KEY", "VOLCENGINE_API_KEY"];
export declare const ARK_BASE_URL_ENV_VARS: readonly ["ARK_BASE_URL", "VOLCENGINE_BASE_URL"];
export declare const DEFAULT_ARK_SEARCH_BASE_URL = "https://open.feedcoopapi.com";
export declare const ARK_SEARCH_API_KEY_ENV_VARS: readonly ["ARK_SEARCH_API_KEY", "ASK_ECHO_SEARCH_INFINITY_API_KEY", "VOLCENGINE_SEARCH_API_KEY"];
export declare const ARK_SEARCH_BASE_URL_ENV_VARS: readonly ["ARK_SEARCH_BASE_URL"];
export declare const DEFAULT_VISION_MODEL = "doubao-seed-2.0-pro";
export declare const SEARCH_TRAFFIC_TAG = "ark_mcp_server_openclaw_bytedance";
/** Resolve the Ark API key from (in order): explicit override → env vars. */
export declare function resolveArkApiKey(explicit?: unknown): string | undefined;
/** Resolve the Ark Base URL with fallback to env vars and the built-in default. */
export declare function resolveArkBaseUrl(explicit?: unknown): string;
/** Resolve the AskEcho Search Infinity API key. */
export declare function resolveArkSearchApiKey(explicit?: unknown): string | undefined;
/** Resolve the AskEcho Search Infinity base URL. */
export declare function resolveArkSearchBaseUrl(explicit?: unknown): string;
/**
 * Build a full endpoint URL for an Ark API path (e.g. `/responses`,
 * `/chat/completions`). Path must begin with a leading slash.
 */
export declare function buildArkEndpoint(baseUrl: string, path: string): string;
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