NewHighlight videos, cut on the beatSee how →

Your agent takes its own screenshots.

Cay lets Claude Code, Codex and other MCP agents capture any Mac window, record the screen and cut a demo video on their own. You keep building.

Coming soonSee how it works

Free to start · 3 days of Pro · macOS 14 or later

The problem

Your agent can't see what it built. So you press ⇧⌘4, find the file, drag it into the terminal and explain which button is off. It says it's fixed. You check. It isn't. Then, before launch, you spend an evening editing the demo video by hand.

Copy a reference

Say “make it look like this.”

Open a site you like. Your agent captures the window with its text and address, and builds from it. Any Mac window works, not just the browser.

claudecaptured Safarinow

App
Safari
Address
orbit.example
Text
Orbit · New · Orbit 2 · Ship work your team loves. · Start free

Secrets hidden before your agent reads it

Every word comes along. Text, app and address arrive with every capture, even what is scrolled out of view.

Check its own work

It looks before it says done.

After each change your agent captures the page, the simulator or the app, and checks the result itself. No ⇧⌘4, no dragging files into the terminal.

By hand

  1. Press ⇧⌘4
  2. Drag over the window
  3. Find the file on the Desktop
  4. Drag it into the terminal
  5. Type which part is wrong

With Cay

  1. Capture the reference⏺ cay · capture ⎿ image + page text
  2. Check the change⏺ cay · capture ⎿ image + page text
  3. Check again⏺ cay · capture ⎿ image + page text
  4. Record the demo⏺ cay · capture ⎿ image + page text

Your agent calls Cay directly, so there is no clicking through screens. It works the same for the browser, the iOS Simulator, a design tool or your own app.

Film the demo

The demo video cuts itself.

Your agent records the flow. Cay picks the moments that changed, zooms in and cuts on the beat for X, Product Hunt or your README.

  • 16:9For X, YouTube and your README
  • 1:1For Product Hunt galleries
  • 9:16For phones, cut tall

Three sizes from one take. The highlights follow the moments that changed, zoom in and cut on the beat.

Works with your agent

One command, then your agent asks Cay.

Cay comes with a small MCP helper. Any agent that speaks MCP can use it, such as Claude Code and Codex CLI. You allow each agent once.

Claude Codeclaude mcp add --scope user cay -- "/Applications/Cay.app/Contents/Helpers/cay-mcp"
Codex CLIcodex mcp add cay -- "/Applications/Cay.app/Contents/Helpers/cay-mcp"
  • Claude Code
  • Codex CLI
  • Any MCP agent

Settings › Agents has a copy button for each command, and a Revoke button for each agent. Cay does not edit your agent's settings files.

Free to start. Pro is $29, once.

Prices in US dollars. Lemon Squeezy sells Cay Pro as Merchant of Record and adds tax at checkout where it applies.

Free

$0

  • Area, window and screen capture
  • The Island: one key copies, saves, pins or edits
  • Screen Requests: your agent asks, you capture
  • Mark what to fix
  • Background removal and backdrops
  • Shield and capture details
  • The library
Coming soon

Pro

$29once

  • Everything in Free
  • Your agent captures windows on its own and reads past captures
  • Screen recording, GIF and Auto Zoom
  • Highlight videos cut on the beat
  • Recording Briefs your agent can read
  • Screen Text Search and Auto Tidy
  • Scrolling capture, automation rules and more backdrops
Coming soon

3 Macs · every 1.x update · refund within 14 days

Trial

3 daysof Pro

  • Starts the first time you open Cay
  • No card, no account
  • Afterwards Cay switches to Free
  • Your captures and settings stay
Coming soon

Questions and answers.

You allow each agent once. After that it captures the windows it needs, every capture shows at the notch and stays in your library, and you can revoke an agent in Settings › Agents.

Captures your agent takes on its own are always shielded: Cay finds keys, passwords and personal data on your Mac and covers them before the agent reads the file. When you send a capture yourself, you choose. Shield can miss text it cannot read.

Any agent that supports MCP, such as Claude Code and Codex CLI. Space send also finds claude, codex, gemini and other agents running in iTerm2, Terminal or tmux.

No. Captures, the text in them and your search index stay on your Mac. Cay goes online to check your Pro license, look for updates and, when you ask for it, download the high-quality background model. Your agent may send what it reads to its model provider under its own terms.

Mac App Store apps run in Apple's sandbox, which does not let an app list the processes on your Mac, talk to tmux or read other apps' window titles. Cay needs all three to work with your agents, so it is sold directly. The download is signed with a Developer ID and notarized by Apple.

Cay switches to Free. Your captures, library and settings stay. Pro features show a small lock until you enter a license key in Settings › License.

Yes. A license covers 3 Macs at a time. Choose Deactivate in Settings › License on the old one, then enter your key on the new one. If the old Mac is gone, write to support@getcay.app and we will reset your activations.

macOS 14 or later, on Apple silicon or Intel. Only Screen Recording permission is required at first. Recording Brief transcripts need macOS 26, and recording your microphone or showing clicks needs macOS 15.

Yes, within 14 days of purchase, for any reason. Write to support@getcay.app with your order number.

Give your agent a way to see.

  1. 1Download Cay

    Open the DMG and drag Cay to Applications.

  2. 2Allow Screen Recording

    Cay asks once. Other permissions wait until a feature needs them.

  3. 3Connect your agent

    Paste one command from Settings › Agents into your terminal.

Coming soon

macOS 14 or later · Apple silicon and Intel · English and Korean