MCP server · Developer tools
glass MCP server
by fixed-width
Lets your AI open, click, type in, and check desktop, Android, and iOS apps while it builds them.

glass is a helper program that lets your AI actually open and use the app it is building for you. Instead of asking you "does this look right?", the AI can launch the app, click buttons, type text, and check the result on its own. It is handy if you or your team build apps with a visual interface and want the AI to test its own work.
What is an MCP server? The 30-second version
On its own, your AI can only chat. An MCP server is a small helper program that gives your AI a new skill or a connection to an app or service. This one connects your AI to the apps running on your own computer, phone emulator, or simulator, so it can open them and interact with them. When you ask, your AI uses glass to launch an app, click, type, and read what is on screen, then tell you what happened.
What this MCP server does
You ask your AI to run and check an app. The AI tells glass to launch that app. glass takes a picture of the screen, reads the app's list of buttons and fields, and can click or type into them. It can also read the app's log messages and spot when the screen changes. Then the AI reports back what it saw or fixed.
Click to zoomWhat you can do with it
- Launch a desktop, Android, or iOS app and see what is on screen
- Click buttons and type into text fields by their names
- Read the app's list of controls instead of guessing from a picture
- Take screenshots and compare two of them to spot changes
- Read the app's log messages while it runs
- Check that a change actually worked after fixing code
Try asking your AI
- “Use glass to run my app, click the Add button, and tell me if the new task shows up”
- “Launch the app, fill in the email field with test@example.com, and check the Save button works”
- “Take a screenshot before and after clicking Submit and tell me what changed”
- “Run the app with glass and show me the last 20 log lines”
What it gives back to you
You get answers in the chat: what the app looks like, which buttons and fields it found, whether a click worked, and short summaries of screen changes. Screenshots come back as images, and log lines come back as text. If the AI fixed code, it tells you what it changed and how it checked it.
Before you start
What you need
- A computer running Linux, Windows, or macOS (Android and iOS apps need an emulator or simulator)
- The glass program downloaded from its Releases page
- An AI app that supports MCP servers, like Claude Desktop or another MCP host
Good to know
glass can click and type inside real apps on your machine, so only point it at apps you are happy to have changed, and note that session recording is off by default because it can store private app content.
Install it with your AI
Add glass MCP server to your AI, no technical skills needed
You don't install anything by hand. You copy one prompt, paste it into an AI that can work on your computer, and it checks, installs and connects the server for you, asking you when it needs something.
Sign in to get the install prompt
Members get a ready-made prompt that lets the Claude desktop app check glass MCP server, install it and connect it for them, step by step. You don't need any technical skills: you copy, paste and answer a few questions. Your connected AI can also find and install any of the 4,066 MCP servers here for you.
Who it's for
Developers and testers who build apps with a visual interface and want their AI to run and check those apps without doing every click by hand.





