Hand the agent a screenshot or a phone photo

"The button overlaps the footer on mobile" takes a paragraph to explain and one screenshot to show. The agent in your terminal reads images the same as on your laptop: get the picture into the terminal and it arrives as an attachment.

From your computer: paste a screenshot

1. Take the screenshot to the clipboard: ⌘⇧⌃4 on a Mac, Win+Shift+S on Windows.
2. Click into the terminal where the agent waits and press ⌘V or Ctrl+V.
3. The path appears at the prompt. Type your question after it and press Enter.

On the way up the image shrinks to the 2500 px the models read and gets several times lighter than the screenshot you took.

From your computer: drop a file

Drag the image, a PDF or a log from your desktop onto the terminal. Its path is pasted at the prompt, and the file waits under /uploads/ in this terminal. Drop several at once to hand over a whole set.

From your phone: send a photo

1. Open the terminal on your phone.
2. Tap Paste a photo on the key bar.
3. Photograph the whiteboard, or pick screenshots from your library.

An iPhone photo in HEIC arrives as a JPEG, so every agent can read it.

Point at what matters

Next to the path, say what the agent should look at: "In this screenshot the total shows 0.00 after a refund. Find why." Claude Code, Codex and OpenCode all attach the image from the path.

Keep the picture

Uploads stay in this terminal and go when it ends or restarts. To keep one, ask the agent to move it into the project, for example into docs/screens/.