Anthropic's Code Execution with their Files API

[hanswff]

I found an obstacle with the AI SDK.

I want to implement Excel analysis via Anthropic's Code Execution tools. For this to work, I believe that I have to upload files to Anthropic's storage via the Files API. I can do that perfectly with Anthropic's SDK.

The problem is that, when I need to give the AI the file id I want it to analyze with the user's prompt, the ModelMessage type is uncompatible with the input that Anthropic requires, which is as follows:

Anthropic's expected file attachment format:

messages: [
    {
      role: "user",
      content: [
        {
          type: "text",
          text: "Please summarize this document for me."
        },
        {
          type: "document",
          source: {
            type: "file",
            file_id: "file_011CNha8iCJcU1wXNR6q4V8w"
          }
        }
      ]
    }
  ]

AI SDK's expected file attachment format:

/**
File content part of a prompt. It contains a file.
 */
interface FilePart {
    type: 'file';
    /**
  File data. Can either be:
  
  - data: a base64-encoded string, a Uint8Array, an ArrayBuffer, or a Buffer
  - URL: a URL that points to the image
     */
    data: DataContent | URL;
    /**
  Optional filename of the file.
     */
    filename?: string;
    /**
  IANA media type of the file.
  
  @see https://www.iana.org/assignments/media-types/media-types.xhtml
     */
    mediaType: string;
    /**
  Additional provider-specific metadata. They are passed through
  to the provider from the AI SDK and enable provider-specific
  functionality that can be fully encapsulated in the provider.
   */
    providerOptions?: ProviderOptions;
}

Is there anyone who knows how to solve this? I know that the AI SDK supports appending files, but I understand it applies to pdf files only.