> Markdown version of [Gemini CLI](https://vaadin.com/docs/next/building-apps/agentic-development/mcp/supported-tools/gemini-cli). Section index: [llms.txt](https://vaadin.com/docs/next/building-apps/llms.txt)

# Gemini CLI

Google Gemini CLI provides native HTTP MCP support, allowing direct integration with the Vaadin MCP server for enhanced AI-assisted development.

## <a id="configuration"></a>Configuration

Add the following to `~/.gemini/settings.json`:

```json
{
  "mcpServers": {
    "vaadin": {
      "httpUrl": "https://mcp.vaadin.com/docs"
    }
  }
}
```

After configuration, restart Gemini CLI to load the MCP server.

> **Note:** Gemini CLI automatically invokes Vaadin tools when you ask questions about Vaadin development (e.g., "What is a Vaadin browserless test?").

## <a id="configuration-file-location"></a>Configuration File Location

The configuration file location varies by operating system:

- **macOS:** `~/.gemini/settings.json`

- **Linux:** `~/.gemini/settings.json`

- **Windows:** `%USERPROFILE%\.gemini\settings.json`

If the directory doesn’t exist, create it before adding the configuration file.

## <a id="automatic-tool-invocation"></a>Automatic Tool Invocation

Gemini CLI features intelligent tool selection:

- When you ask Vaadin-related questions, it automatically queries the Vaadin MCP server

- No manual tool invocation required

- The assistant determines when documentation lookup would be helpful

- Responses are grounded in current Vaadin documentation

## <a id="verify-the-setup"></a>Verify the Setup

After restarting Gemini CLI:

1. Start a new conversation

2. Ask a Vaadin-specific question (e.g., "How to implement data binding in Vaadin?")

3. Observe the tool invocation in the response

4. Gemini fetches relevant documentation from the Vaadin MCP server

You can also explicitly request documentation by asking "What does the Vaadin documentation say about…​?"

## <a id="resources"></a>Resources

- [Gemini CLI GitHub Repository](https://github.com/google-gemini/gemini-cli)

- [Gemini CLI MCP Documentation](https://github.com/google-gemini/gemini-cli/blob/main/docs/tools/mcp-server.md)