File Download

Trigger a CSV file download by converting in-memory text or JSON data into a Blob, generating an object URL, and prompting the browser to save it. This method bypasses filesystem access issues for runtime-generated content.

Yes, you can download files from authenticated app filesystem paths securely. The Skill builds a cookie-authenticated URL to serve user- and permission-scoped files, including layer paths like the ~/ home mapping, without public exposure.

To download external files despite CORS limitations, route the remote fetch through a server proxy. The proxy retrieves the remote document safely, and then the browser downloads the file from the proxied response.

Yes, this file download method is built for admin workflows like exporting reports, downloading generated datasets, and retrieving remote documents. It respects permissions and handles authenticated app paths, in-memory Blobs, and external URLs.

In-memory binary file downloads fail when not properly converted into a Blob. You must convert the binary data into a Blob and create an object URL to reliably trigger the browser download without filesystem access errors.

You only need a server proxy to download files from external URLs if you encounter CORS constraints. The proxy provides a CORS-safe option by fetching the remote file server-side before triggering the browser download.