rig
Join the waitlist

AI agents

Let your coding agent see and click your site on every device.

rig gives agents like Claude Code one MCP connection to every browser and simulator you have open. It looks, measures and clicks, and you see each step in rig.

Join the waitlistrig on a Mac with Claude Code in Terminal. The agent looks at sanderr.nl on five devices at once, each marked with an orange ring.

How it works

  1. Open rig

    Pick the browsers and simulators you want, and open your site.

  2. Add rig to your agent

    One line in Claude Code. rig shows it under the Agent button.

  3. Ask

    "Why does this page scroll sideways on the small phone?" Your agent checks every device.

claude mcp add --scope user rig -e ELECTRON_RUN_AS_NODE=1 -- \ /Applications/rig.app/Contents/MacOS/rig \ /Applications/rig.app/Contents/Resources/app/app/mcp.ts

For rig in your Applications folder. The same line is under the Agent button in rig.

It sees what your visitors see.

A screenshot of any device, or of the whole page in labelled slices, with how far down the page it is. Real Safari on iOS Simulator included.

rig with sanderr.nl on two desktop browsers, a tablet, a small phone and iOS Simulator.

It measures instead of guessing.

For any element: its box, its computed styles, and whether that browser supports a piece of CSS. Plus every console error and warning from your browsers.

Claude Code in Terminal, reporting what it found on the small phone after looking at every device in rig.

It clicks, scrolls and types.

Click, scroll and type in your browsers, or scroll all of them to the same element at once. rig's Agent panel shows every step.

rig's Agent panel: Claude Code is using rig, with a log of what it looked at, inspected and scrolled.

It can't change your site.

While an agent works, and for ten minutes after, rig blocks form posts, PUT and DELETE. You approve every new URL, and the window says who is in control.

rig asking whether Claude Code may open https://sanderr.nl/blog, with the buttons Don't Allow and Open.

Questions

Which agents work with rig?

Claude Code, tested. rig speaks MCP over stdio, so other MCP clients should work; we haven't tested them yet.

Can the agent submit forms on my site?

No. While it works and for ten minutes after, rig blocks the requests that would change your site. On a simulator, rig only lets an agent tap when it can block them.

Does the agent see my own browser?

No. rig's browsers run with their own empty profiles, never yours.

Try the alpha.

Leave your email and you'll get the download link for the alpha by mail.

Alpha for Macs with Apple Silicon and macOS 14 or later. See the privacy statement.