New Update : Launched chrome extension to chat with your MCP servers

Introducing the MCP Admin Chrome Extension: Chat With Your MCP Servers From Your Browser

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Introducing the MCP Admin Chrome Extension: Chat With Your MCP Servers From the Browser Side Panel

You’ve built MCP servers and tools on MCP Admin. Now you can talk to them directly from Chrome. We’ve launched the MCP Admin Chrome Extension, a side-panel chat client that connects your MCP Admin servers to an LLM of your choice, so the model can call your tools for you.

It takes three steps: enter your MCP Admin API key, connect an LLM, and start chatting.

What it does

The extension connects to the MCP servers you manage on MCP Admin. You type a request in plain language. The LLM reads it, checks which tools the selected server offers, and runs them in the background to get you an answer.

Highlights:

• Side-panel chat that stays open while you browse
• Your MCP Admin servers in one dropdown, refreshable from the Admin API
• Gemini or OpenAI as the model behind the chat
• Saved chat sessions, with a sidebar to switch between threads
• Markdown export of any conversation
• Light and dark themes

Before you start

You’ll need:

• An MCP Admin API key (Bearer token) from mcpadmin.cloud
• At least one deployed MCP server on your account
• An API key for Google Gemini or OpenAI
• Google Chrome

Step 1: Install the extension

The extension isn’t on the Chrome Web Store yet, so you install it manually with Developer Mode. It takes about a minute.

1. Open the GitHub repository and download mcpadmin-extension.zip.
2. Unzip it into a folder on your computer.
3. In Chrome, go to chrome://extensions/.
4. Switch on Developer mode in the top-right corner.
5. Click Load unpacked and select the unzipped folder.
6. Click the puzzle-piece icon next to your profile picture and pin the MCP Admin extension to your toolbar.

Step 2: Enter your MCP Admin API key

The first time you open the extension you’ll see a Setup Required screen.

1. Click Open Settings.
2. Under MCP Admin Connection, paste your MCP Admin API key.
3. Click Test. A green checkmark means you’re connected to your MCP backend.

Step 3: Connect an LLM

Still in Settings, under LLM Configuration:

1. Choose the Gemini or OpenAI tab.
2. Paste that provider’s API key.
3. Click Refresh next to the Model dropdown to load the latest chat models.
4. Pick a model. Fast, low-cost options such as gemini-2.5-flash or gpt-4o-mini work well for tool-driven chats.
5. Optionally choose Light or Dark mode.
6. Click Save Settings.

Step 4: Chat with your MCP servers

Once setup is done, the main chat unlocks.

1. Select a server from the dropdown at the top. Use the refresh icon to pull your latest server list.
2. Check the transport. Make sure the transport type (for example sse) matches your server.
3. Type your request. The model will look at the tools on that server, choose the right ones and run them.

Some examples of what to ask:

• “List the tools available on this server.”
• “Classify this message and tell me which team should handle it: ‘My card was charged twice. Please help ASAP.'” (works with the OpenJEV tool from our earlier guide)
• “Create a draft post on my WordPress site about today’s release.”

Managing your chats

Use the sidebar to start new threads, jump between past conversations, or export a chat log as Markdown. This is handy for documenting a test run or sharing results with your team.

Privacy and security

The extension runs entirely in your browser. It talks directly to the Gemini or OpenAI API and to your MCP Admin API, with no intermediate proxy server. Your API keys are stored in Chrome’s local browser storage on your machine.

A few good habits:

• Treat all your keys like passwords, and don’t share screenshots of the settings page.
• Use separate keys for the extension so you can revoke them independently.
• Regenerate any key you think has been exposed.

Troubleshooting

Problem	Likely cause	Fix
“Setup Required” won’t go away	Settings not saved	Complete all fields and click Save Settings
MCP Admin Test fails	Wrong or expired key	Copy a fresh key from your dashboard and test again
No models in the dropdown	Missing or invalid LLM key	Re-enter the key, then click Refresh
Server list is empty	No deployed servers, or list is stale	Deploy a server on MCP Admin, then use the refresh icon
Tools aren’t called	Wrong transport, or vague tool descriptions	Match the transport to your server and improve the tool descriptions in MCP Admin
Extension missing after restart	Folder moved or deleted	Keep the unzipped folder in a permanent location

FAQ

Do I need Claude Desktop or another MCP client?
No. The extension is its own chat client, though your MCP Admin servers still work with other clients too.

Which models does it support?
Google Gemini and OpenAI, using your own API key.

Will I be charged for usage?
Model usage is billed by your LLM provider through your own key.

Why isn’t it on the Chrome Web Store?
It’s currently distributed as a packaged extension you load in Developer Mode. The full source is on GitHub.

What’s next

We’re just getting started. We will improve with our core contributors through PRs.

Get started

Download the extension from GitHub, add your keys, and ask your MCP servers your first question. We’d love to hear what you build with it.