How to Coect the GTmetrix MCP With ChatGPT

We show you how to coect the GTmetrix MCP with OpenAI’s ChatGPT Desktop app (formerly known as Codex).

The GTmetrix MCP can be coected to OpenAI’s ChatGPT Desktop app in order to integrate GTmetrix workflow directly into the AI app.

In this guide, we’ll show you how to coect the GTmetrix MCP to ChatGPT (formerly known as Codex) with step-by-step instructions.

This guide is for the new ChatGPT Desktop app that includes Codex and ChatGPT Work.
 
The regular ChatGPT app is now called ChatGPT Classic. Learn how to coect GTmetrix MCP with ChatGPT Classic here.

There are 2 primary ways to coect the GTmetrix MCP to Codex/ChatGPT Work inside the ChatGPT Desktop app:

If you are using an organization-managed Codex/ChatGPT Work account, your administrator may restrict the adding of custom MCP servers.

Reach out to your IT team to add the GTmetrix MCP to the approved MCP servers list.

We provide step-by-step guidance for each method below:
 

The simplest and quickest method to coect to the GTmetrix MCP is by using OAuth – you can coect with just a few clicks.
 

You can also use the Ctrl + comma keyboard shortcut on Windows/Linux (Cmd + comma on Mac).

On the Plugins menu, click on “MCPs“.

Leave everything else empty – Click Save once you’ve entered the required details.

Click Authenticate – this will launch a new browser window asking you to authorize the coection to the GTmetrix MCP.

If you wish to continue without creating an account, click on Continue as guest – note that guest testing is highly limited and you’ll need to reauthorize the coection with your GTmetrix account after your Guest API credits have been used up.

Create an account or login to your GTmetrix account for full access.

Next, click on Allow to authorize your coection.

A success screen should appear when the coection is successfully established.
 

To confirm, restart the app, then start a new chat and ask ChatGPT if it can see the GTmetrix MCP tools.

If ChatGPT responds with a list of GTmetrix tools, you know that the coection was successful and you can now start interacting with it and get it to use GTmetrix.
 

If you prefer to manually configure the GTmetrix MCP server in your ChatGPT configuration files, you can do so with the instructions below:
 

 

Copy your API key and keep it aside safely as you’ll need it to set up the MCP coection.

For security reasons, the screenshot above says YOUR_API_KEY but your Account page will display your actual API key.
 

Open this file in a text/code editor.
 

Add the following code to the very bottom of the file:

[mcp_servers.gtmetrix]
url = "https://gtmetrix.com/mcp"

[mcp_servers.gtmetrix.http_headers]
Authorization = "Bearer YOUR_API_KEY"

where YOUR_API_KEY is your API key that you previously copied from the Account page.
 

Save the config file, then quit the ChatGPT Desktop app entirely and restart it to apply the changes.
 

Restart ChatGPT, then start a new chat and ask if it can see the GTmetrix MCP tools.

If ChatGPT responds with a list of GTmetrix tools, you know that the coection was successful and you can now start interacting with it and get it to use GTmetrix.

Coecting the GTmetrix MCP to ChatGPT (formerly known as Codex or ChatGPT Work) is quick, simple, and can be done in multiple ways:

Use the GTmetrix MCP coection to bring your GTmetrix workflows directly into ChatGPT.

Get ChatGPT to start GTmetrix tests, test in different scenarios (locations/devices/coection speeds, etc.), compare results, and help you understand what’s slowing down your page and how to fix them.

Give this a try and let us know if you run into any bugs or issues.

Basic GTmetrix Splash

Run more tests with additional API credits. Use GTmetrix MCP inside ChatGPT to automate testing, compare results, access history, and surface actionable insights.

Available with select PRO plans (excluding Lite plan).

Other features include: Priority access for tests, More Monitored Slots, Access to more locations, Remote Location Monitoring, Complete Mobile testing suite, and more!

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