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Gemini MCP: add 1folder so Gemini saves and opens your files

Short answer

Add 1folder to Gemini and it can save its work to your files and open them again. In Gemini on the web, open Settings, then Connected Apps, and add a custom app with https://1folderapp.com/mcp. Google allows this for adults in the US with a personal Google Account, in English, with Keep Activity on. Gemini CLI uses gemini mcp add.

Checked on November 11, 2026 against 3 sources.

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Gemini saves Spring trip and updates it when a booking changes. It works only in the folders you allow.

Gemini app requirements and the separate CLI change

  • Partly: Gemini custom appsAge 18 or over, in the US, personal Google Account, English, Keep Activity on
  • No: Work or school Gemini accountsNot available for custom apps
  • Partly: Web and phoneAdd it on the web; then use it on the web or in the phone app
  • Yes: Free Gemini accountsGoogle lists no paid plan; the rules above still apply
  • Partly: Gemini CLI consumer accessFree, Google AI Pro and Ultra moved to Antigravity CLI on June 18, 2026; Code Assist Standard and Enterprise keep it

Checked on November 11, 2026, from Google’s custom-app help, Gemini CLI docs and CLI transition announcement.

Connect the Gemini app to 1folder

  1. Add a custom app on the web

    In Gemini on the web, open Settings, then Connected Apps. If needed, open Personal Intelligence first. Under Custom apps, choose Add a custom app (or the add field, for your first one), enter https://1folderapp.com/mcp and follow the prompts.

  2. Sign in

    Follow the app’s prompts to sign in to 1folder with the account holding your work.

  3. Choose the folders and press Allow

    Pick the Travel space or just the folders for this work. Choose View and edit to save files, or View only to review them, then press Allow.

  4. Check one saved file

    Ask Gemini to save Spring trip and return its private link. Open the file and check the actual contents before handing over more work.

Requests to try with the connected app

  • In Gemini

    “Read Trip costs in my 1folder Travel folder. Save Spring trip as a page with dates, confirmed bookings, estimates and unresolved questions. Give me its private link.”

  • In Gemini

    “Read Spring trip in 1folder. Replace the estimated hotel with the confirmed booking below, preserve the other dates and update the same page.”

  • In Gemini

    “Read Spring trip and list missing booking details before suggesting any changes. Do not invent confirmation numbers.”

Gemini connectors: the app is different from the CLI

In the Gemini app, a custom app is a connection you add with a service’s address. Use the web settings to add it, then type @ and select it in a prompt when you want to make sure Gemini uses it. No terminal command is needed for that path.

Gemini CLI is a developer tool with its own settings and commands. Adding an app in Gemini’s web settings doesn’t set up the CLI, and the CLI doesn’t get around the app’s US-only rule.

Gemini CLI MCP setup, if you still use Gemini CLI

  1. Add 1folder from your terminal

    Run gemini mcp add --transport http 1folder https://1folderapp.com/mcp. It goes into this project’s settings; add --scope user to use it in every project. This registers the address but doesn’t sign you in yet.

  2. Sign in and press Allow

    Start Gemini CLI and enter /mcp auth 1folder. Sign in to 1folder in the browser, pick the Travel folder, choose View and edit and press Allow.

  3. Check the connection

    Run gemini mcp list from your shell to see the server and its status. Then ask Gemini CLI to save a short note to 1folder and open the link it returns.

Check the Gemini CLI transition before installing

Google’s May 19, 2026 announcement says Gemini CLI stopped serving requests on June 18, 2026 for free users and for Google AI Pro and Ultra, with Antigravity CLI as the replacement. Organisations with a Gemini Code Assist Standard or Enterprise license keep Gemini CLI.

The commands above are from the Gemini CLI documentation, for people who still have that access. They don’t set up Antigravity CLI, and a Gemini app subscription doesn’t bring the CLI back.

Try a plan with something concrete to update

Use a Travel folder containing a Trip costs table: train $80, two hotel nights estimated at $240, museum $30. Ask Gemini to save Spring trip with the dates and mark the hotel as an estimate. Open the saved plan and check those details.

When the hotel is booked for $268, ask Gemini to read the saved page and update that same file. Compare the versions to check that it changed the hotel amount without moving the trip dates. You get a maintained file rather than another answer hidden in a conversation, and Claude or ChatGPT can read the same file once you connect them.

If the Gemini MCP connector is missing or fails

  • Check the Gemini app’s rules first: 18 or over, in the US, a personal Google Account, English and Keep Activity on. Work and school accounts can’t add custom apps.
  • If Connected Apps is missing from Settings, Google says to look under Personal Intelligence, then Connected Apps.
  • In Gemini CLI, gemini mcp list shows the configured servers. A server added without --scope user only loads in the project where you added it.
  • If reading succeeds but saving fails, check View and edit on the 1folder connection and whether the target file is in an allowed folder. Remove the connection in 1folder to stop access immediately.

Questions

Is there a Gemini MCP server address for 1folder?
Yes: https://1folderapp.com/mcp. In the Gemini app, add it as a custom app. In Gemini CLI, add it with the gemini mcp add command above.
Can I add Gemini custom apps outside the US?
No. Google’s help says you must be in the US. Elsewhere, upload files to 1folder yourself and attach a downloaded copy to a Gemini chat when it needs one.
Can I set up the connection on my phone?
Google requires custom-app setup in the Gemini web app. Once added there, the connected app is available in both the web and mobile apps.
Why did my free Gemini CLI stop working?
Google moved free, Google AI Pro and Google AI Ultra users from Gemini CLI to Antigravity CLI on June 18, 2026. Changing your MCP settings won’t bring it back.
Does Gemini automatically save every travel update?
No. Ask Gemini to save or update Spring trip. 1folder keeps the file and versions; it does not read the Gemini chat or run an AI to maintain the itinerary.

Sources

Checked on November 11, 2026.

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