How to connect GTmetrix to Hermes Agent
Connect GTmetrix to Hermes with ClawLink: paste your GTmetrix key once and 20 tools work from chat. No MCP server to run, nothing stored on your machine.
GTmetrixAPI KEYMCPGTmetrix is a performance testing and monitoring tool that analyzes website speed, provides detailed performance reports, and helps optimize web applications for better user experience.. Once connected, Hermes Agent can read and act on GTmetrix from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent GTmetrix access start with registering your own OAuth app or pasting API keys into env files, then leave the token refresh and tool wiring to you. ClawLink gives Hermes a more practical GTmetrix setup: pair once in the browser and your always-on Hermes agent can act on GTmetrix for you, reading and doing real work on your behalf with no auth, token refresh, or tool wiring to build yourself.
Setup
It takes three steps to connect Hermes to GTmetrix.
1Install and pair
Install the ClawLink plugin, then pair Hermes with a one-time browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable- 2
Connect GTmetrix
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with GTmetrix?"
Install by command
The prompt above walks Hermes through this. By hand, it is four commands and a browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable
hermes clawlink begin # prints an approval link — open it and approve
hermes clawlink finish # after approving in the browser
hermes clawlink testThen connect GTmetrix in the ClawLink dashboard — paste your GTmetrix API key once.
Verify the connection by asking Hermes:
Pull the relevant data from GTmetrix, summarize it in plain English, and point out anything that needs attention.
Using a different agent?
The Hermes plugin is one client of ClawLink's MCP server. Claude Code, Cursor, Codex, or any agent that can run a shell command pairs with the same ClawLink account through the CLI:
npx -y @useclawlink/cli loginlogin opens the same browser approval and stores a credential locally. Once GTmetrix is connected in the dashboard, that agent calls the same 20 GTmetrix tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
GTmetrix MCP for Hermes
Looking for a GTmetrix MCP server for Hermes Agent? ClawLink connects GTmetrix to Hermes Agent and exposes 20 GTmetrix tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw GTmetrix integration works the same way.
What the Hermes Agent GTmetrix integration can do
20 GTmetrix tools are ready for Hermes Agent once the account is connected. The 18 below are the ones people reach for most; your agent can call all 20.
18 of 20 GTmetrix tools for Hermes
| Tool | What it does |
|---|---|
Get browser gtmetrix_get_browser | Retrieve browser details from GTmetrix |
Get browsers gtmetrix_get_browsers | Retrieve the list of available browsers for GTmetrix performance tests |
Get location gtmetrix_get_location | Retrieve location details from GTmetrix |
Get locations gtmetrix_get_locations | Retrieve the list of available GTmetrix test locations |
Get page gtmetrix_get_page | Retrieve page details from the user's GTmetrix account |
Get page latest report gtmetrix_get_page_latest_report | Retrieve the most recent test report for a monitored page in GTmetrix |
Get page reports gtmetrix_get_page_reports | Retrieve the report list associated with a monitored page in GTmetrix |
Get pages gtmetrix_get_pages | Retrieve the page list from your GTmetrix account |
Get report gtmetrix_get_report | Retrieve a GTmetrix test report by its identifier |
Get report resource gtmetrix_get_report_resource | Get a report resource such as screenshot, HAR file, video, PDF, or Lighthouse JSON |
Get simulated device gtmetrix_get_simulated_device | Retrieve simulated device details |
Get simulated devices gtmetrix_get_simulated_devices | Retrieve the list of simulated devices available in GTmetrix |
Get status gtmetrix_get_status | Retrieve the current API account state and remaining credits |
Get test gtmetrix_get_test | Retrieve test details for a specific GTMetrix test |
Get tests gtmetrix_get_tests | Retrieve the test list from your GTmetrix account with pagination and filtering support |
Retest page gtmetrix_retest_page | Initiate a retest of a GTmetrix page with same parameters |
Retest report gtmetrix_retest_report | Initiate a retest of a completed GTmetrix report with same parameters |
Start test gtmetrix_start_test | Start a new GTmetrix test for a specified URL |
Try it: find the GTmetrix tool you need
Browse the 18 GTmetrix tools
Click any tool to see exactly what Hermes can do and copy a ready-to-use prompt.
Example prompts
Pull the relevant data from GTmetrix, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from GTmetrix, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from GTmetrix, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from GTmetrix, summarize it in plain English, and point out anything that needs attention.
ClawLink vs. building it yourself
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want GTmetrix working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the GTmetrix API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected GTmetrix account becomes available to the agent without you building credential management. |
| Ongoing maintenance | You own refresh logic, permission debugging, environment config, and every provider-specific edge case for GTmetrix. | ClawLink handles the repetitive integration plumbing so your team can focus on the workflow instead of the infrastructure. |
| Agent usability | You still need to expose the right GTmetrix actions to the runtime in a format your agent can reliably use. | 20 tools for GTmetrix are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes GTmetrix to AI agents. It is developer infrastructure: Python and TypeScript SDKs, an MCP server, and a catalog past 1,000 apps, aimed at teams shipping agent products. ClawLink is built for Hermes Agent users instead. You install the plugin once, connect GTmetrix in the browser, and the 20 tools above work from chat. There is no SDK and no config file, and the GTmetrix key you paste at setup is stored server-side rather than kept in your environment. Choosing between them? Read the full Composio alternatives comparison.
Troubleshooting
Hermes paired but still can't use GTmetrix
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
Connection succeeds but no tools appear
Reconnect GTmetrix from the dashboard, then start a fresh chat if the runtime still has the old tool catalog loaded.
"Tool schema not loaded yet" error when calling GTmetrix tools
GTmetrix tool schemas load on demand the first time a tool runs and are cached after that, so this error usually clears on its own: wait a few seconds and retry the same request. If every GTmetrix call keeps failing with it in a fresh chat, reconnect from the dashboard, and contact support if it still persists — that pattern points to a configuration problem on our side, not something you can fix by reconnecting again.
GTmetrix returns 403 or "permission denied" on one action while others work
Two usual causes. The connected account may not have access to the specific workspace, inbox, store, or project in the request — check that first. If access looks right, the agent may have sent a placeholder value (like "YOUR_ID" or an example id from documentation) instead of a real one: ask it to run a list or search tool first, then retry the action with a real id from those results. Most failures at this stage are one of these two, not ClawLink bugs.
API key setup works but results look incomplete
Double-check that the API key for GTmetrix has the right scopes or account access. A valid key can still be too limited for some reads or writes.
FAQ
Is there a Hermes Agent GTmetrix integration?
Yes. ClawLink is the fastest way to connect Hermes to GTmetrix: link your GTmetrix account once in the browser and Hermes Agent can call the GTmetrix API through 20 ready-made tools — no custom code or token handling.
How do I connect GTmetrix to Hermes with ClawLink?
Install the plugin with hermes plugins install ClawLink-HQ/hermes-plugin --enable, then pair once: run hermes clawlink begin, approve the link in your browser, and run hermes clawlink finish. Connect GTmetrix in the dashboard and Hermes can use it from the next message — no config files, and the GTmetrix key you paste is stored server-side instead of in your environment.
How long does it take to connect GTmetrix to Hermes Agent?
About two minutes. Sign in, click Connect next to GTmetrix in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring GTmetrix up myself?
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want GTmetrix working from chat.
Hermes paired but still can't use GTmetrix
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
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