How to integrate GTmetrix MCP with Atomic Agent

Connect Atomic Agent to GTmetrix MCP. Run a performance test on your homepage, check latest gtmetrix report for example.com, and more using natural language, with authentication handled for you.

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Api Key

GTmetrix is a web performance analysis tool that tests and reports on site speed. It helps developers and teams identify bottlenecks and optimize web applications for a better user experience.

16 Tools

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including GTmetrix.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a GTmetrix account. See the Atomic Agent documentation for installation instructions.

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How Atomic Agent connects to GTmetrix

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect GTmetrix to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in GTmetrix. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your GTmetrix account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

What is the GTmetrix MCP server, and what's possible with it?

The GTmetrix MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your GTmetrix account. It provides structured and secure access so your agent can perform GTmetrix operations on your behalf.

Use GTmetrix from Atomic Agent

With your account connected, ask Atomic Agent to work with GTmetrix in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

TOOLS

Supported Tools

Every GTmetrix action and event your agent gets out of the box.

Delete Page

Tool to delete a specific page in GTmetrix.

Delete Report

Tool to delete a GTmetrix report.

Get Browsers

Tool to retrieve the list of available browsers for GTmetrix performance tests.

Get Location Details

Tool to retrieve location details from GTmetrix.

Get Locations

Tool to retrieve the list of available GTmetrix test locations.

Get Page Details

Tool to retrieve page details from the user's GTmetrix account.

Get Page Reports

Tool to retrieve the report list associated with a monitored page in GTmetrix.

Get Pages

Tool to retrieve the page list from your GTmetrix account.

Get Report

Tool to retrieve a GTmetrix test report by its identifier.

Get Simulated Device

Tool to retrieve simulated device details.

Get Simulated Devices

Tool to retrieve the list of simulated devices available in GTmetrix.

Get API Account Status

Tool to retrieve the current API account state and remaining credits.

Get Test Details

Tool to retrieve test details for a specific GTMetrix test.

Get Tests

Tool to retrieve the test list from your GTmetrix account with pagination and filtering support.

Retest Report

Tool to initiate a retest of a completed GTmetrix report with same parameters.

Start Test

Tool to start a new GTmetrix test for a specified URL.

FAQ

Frequently asked questions

With a standalone GTmetrix MCP server, the agents and LLMs can only access a fixed set of GTmetrix tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from GTmetrix and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Atomic Agent fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right GTmetrix tools.

Yes, absolutely. You can configure which GTmetrix scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your GTmetrix data and credentials are handled as safely as possible.

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