Add file uploads · prompt 3 · Claude Code · week 2026-W44-vercel-template

Claude Code built it with @vercel/blob

Prompt: I need an upload button that stores files in cloud object storage and returns a URL.

Grader: The agent added @vercel/blob, wired a client-upload route handler and an upload button into the home page, and the build passed; it could not perform a real upload because no BLOB_READ_WRITE_TOKEN was set, so runtime behavior is unverified.

@vercel/blob135s

Claude Code · Add file uploads · fresh Next.js app

[model claude-opus-5-5]▍

starting sandbox…

Replay of the real agent session in an isolated sandbox. Tool output is truncated for readability.