Add file uploads · prompt 2 · Claude Code · week 2026-W44

Claude Code built it with @vercel/blob

Prompt: Add file upload with storage for PDFs up to 20MB to this app.

Grader: The agent installed @vercel/blob, wired a client-upload token route with a 20 MB PDF limit, built a form and a file list, and the build passed. It did not test a real upload because no BLOB_READ_WRITE_TOKEN was set, so the user must connect a Blob store before uploads work.

@vercel/blob80s

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.