export interface ApiKeyExchangeOptions {
    apiKey: string;
    envId: string;
    /** 地域，默认 ap-shanghai */
    region?: string;
    /** 请求超时时间，默认 15000ms */
    timeout?: number;
    /** HTTP 代理 */
    proxy?: string;
    /** 自定义 endpoint，覆盖默认的 https://<envId>.<region>.tcb-api.tencentcloudapi.com */
    endpoint?: string;
}
export interface ApiKeyCredentialResult {
    secretId: string;
    secretKey: string;
    token: string;
    /** 临时密钥过期时间（毫秒时间戳） */
    accessTokenExpired: number;
    envId: string;
}
/**
 * 用 CloudBase API Key 换取临时 STS 密钥
 *
 * 调用 qbase-service 的 /capi/credential 端点：
 * POST https://<envId>.<region>.tcb-api.tencentcloudapi.com/capi/credential
 * Authorization: Bearer <apiKey>
 * Body: { "env": "<envId>" }
 *
 * 返回: { code: 0, data: { TmpSecretId, TmpSecretKey, Token, ExpiredTime } }
 */
export declare function exchangeApiKeyForCredential(options: ApiKeyExchangeOptions): Promise<ApiKeyCredentialResult>;