UXMachine in Antigravity

Add UXMachine to Google Antigravity as an MCP server. Then ask the agent to measure your site with UXMachine and it will give you the result and the link to the report with everything we measured.

4 steps · No terminal

Before you start

Antigravity installed and signed in.
A UXMachine account.
Your site published at a public address.
Each measurement uses 1 credit from your UXMachine account. Measurements that cannot be made use none.

Step by step

Add UXMachine

Open the file .gemini/config/mcp_config.json in your user folder (create it if it doesn't exist), paste this and save:

{"mcpServers":{"uxmachine":{"serverUrl":"https://uxmachine.app/mcp"}}}

If you already have other servers, add uxmachine inside mcpServers.

Restart Antigravity

Quit Antigravity completely and open it again while signed in. It only reads that configuration when it starts.

Authorize in UXMachine

Open Customizations, on the Installed tab. Under MCP Servers, click Authenticate next to uxmachine. In the UXMachine window, sign in with your account and click "Authorize". If Antigravity asks you for a code, paste it and click Submit.

Ask it to measure with UXMachine

In a new conversation, ask:

Measure https://your-site.com with UXMachine and tell me what was observed and what could not be checked.

How you know it works

In Customizations → Installed, uxmachine shows a green dot and "4 tools enabled", and the agent's answer includes the report link.

Tested with Antigravity 2.28.0 and Antigravity CLI 1.4.9 on 2026-10-28.

If something goes wrong

uxmachine doesn't appear in Customizations

Quit Antigravity completely and open it again while signed in.

You use Antigravity CLI

Use the same configuration from step 1. Type /mcp, choose uxmachine, press Enter and authorize again: the app's authorization doesn't carry over. When it asks for permission to use uxmachine, choose "Yes, allow tool call".

It measured twice

The app and its terminal share a window. Type the request in only one of them: each measurement uses 1 credit.

What we measure and what we do not

We measure the pages we find from your site's address, at 1280 and 390 px wide, with a specific set of automatic rules. What does not appear in the report has not been checked, and that does not mean it is fine. How we measure

Prefer not to use Antigravity? Measure your site from uxmachine.app