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Dec 29, 2025
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docs: Add gemini-cli MCP server configuration example #42679

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23 changes: 23 additions & 0 deletions source/_integrations/mcp_server.markdown
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Expand Up @@ -145,6 +145,29 @@ Home Assistant instance:

![Screenshot of Cursor controlling the office lights](/images/integrations/mcp_server/cursor-lights-control.png)

### Example: gemini-cli

1. Install `gemini-cli` if you haven't already. You can find installation instructions at [https://geminicli.com/](https://geminicli.com/).
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According to the documentation guidelines, lists should be surrounded by blank lines. There should be a blank line before step 1 to separate it from the preceding paragraph.

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2. Open the `gemini-cli` configuration file. This is usually located at `~/.gemini/settings.json`. For more details, refer to the [gemini-cli MCP server documentation](https://geminicli.com/docs/tools/mcp-server/).
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File paths should be marked with backticks according to the documentation guidelines. The file path ~/.gemini/settings.json needs backtick formatting.

Copilot generated this review using guidance from repository custom instructions.
3. Add the following to your `mcpServers` configuration:

```json
{
"mcpServers": {
"homeassistant": {
"httpUrl": "https://<your_home_assistant_url>/api/mcp",
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"headers": {
"Authorization": "Bearer ${HOMEASSISTANT_TOKEN}"
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}
}
}
}
```

4. Replace `<your_home_assistant_url>` with the URL of your Home Assistant instance.
5. Set the `HOMEASSISTANT_TOKEN` environment variable to a [Long-Lived Access Token](https://developers.home-assistant.io/docs/auth_api/#long-lived-access-token) from your Home Assistant instance.
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6. Save the file. You can now use Home Assistant tools within `gemini-cli`.

## Supported functionality

### Tools
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