import type Letta from "@letta-ai/letta-client";
/** One file to upload into an SDK-managed Cloud sandbox. */
export interface SandboxFileUpload {
    /** Filename reported to the sandbox upload API. */
    name: string;
    /** Portable file contents. The Blob type supplies the MIME type. */
    data: Blob;
}
/** Metadata returned after a file is uploaded into a managed sandbox. */
export interface SandboxUploadedFile {
    path: string;
    name: string;
    mimeType: string;
    size: number;
}
export interface SandboxFileUploadResult {
    files: SandboxUploadedFile[];
}
/** File transfer client for an SDK-managed Cloud sandbox. */
export interface SandboxFilesClient {
    /** Upload files under `/root/downloads` in this SDK-managed Cloud sandbox. */
    uploadFiles(files: readonly SandboxFileUpload[]): Promise<SandboxFileUploadResult>;
    /** Download one file under `/root/downloads` from this SDK-managed Cloud sandbox. */
    downloadFile(path: string): Promise<Uint8Array>;
}
export declare function uploadSandboxFiles(apiClient: Letta, sandboxId: string, files: readonly SandboxFileUpload[]): Promise<SandboxFileUploadResult>;
export declare function downloadSandboxFile(apiClient: Letta, sandboxId: string, path: string): Promise<Uint8Array>;
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