What do I add to Gemini?

Two things: the Tuvoz skill, the playbook Gemini follows to write the brief, wait for your yes, watch the call and answer the voice agent; and the Tuvoz custom app, the tools that place and follow the call. You add both once and sign in once.

Do I need to paste an API key?

No. Gemini signs in to Tuvoz with OAuth: you sign in with Google on Tuvoz's site and approve. Gemini never sees your password, and you can disconnect it any time under Connected agents.

Can I use it in the Gemini app on my phone?

Yes, once you've added the skill and the custom app on gemini.google.com from a computer. The mobile app can't add skills or custom apps, but it uses the ones you've added.

Why does Gemini keep asking me to confirm?

Gemini asks before every action a custom app takes that changes something. For Tuvoz that's placing a call, answering the voice agent, sending it an instruction and hanging up. Checking on the call needs no confirmation. If you don't confirm an answer in time, Tuvoz calls your phone and you answer the question yourself.

What if I close the chat during a call?

The call keeps going. If the voice agent has a question and Gemini isn't checking in, Tuvoz calls your verified phone, asks you, and passes the answer back into the call.

How to enable Gemini to make phone calls

Let Gemini place real phone calls: upload the Tuvoz skill and add Tuvoz as a custom app on gemini.google.com, sign in with Google once, and ask for a call in any chat, on the web or on your phone. Gemini answers the voice agent's questions, and Tuvoz calls you when it can't.

Updated Oct 19, 2026

Install

Paste this into Gemini:

Set up Tuvoz: https://tuvoz.io/agents

Your agent follows tuvoz.io/agents.

Step by step

When you paste the line, Gemini reads the setup page and walks you through these steps. The clicks are yours, on gemini.google.com in a browser on a computer (the Gemini mobile app can’t add skills or custom apps):

Download the skill from tuvoz.io/gemini/latest. The link downloads the Tuvoz skill as a .md file.
Upload the skill. On gemini.google.com, click “Customize” in the sidebar (if you don’t see it, click “More” first), then “Skills”. Click “Upload”, pick the downloaded .md file and click “Create”.
Add Tuvoz as a custom app. Click Settings at the bottom, then “Connected Apps” (if you don’t see it, click “Personal Intelligence”, then “Connected Apps”). Under “Custom apps”, click “Add a custom app”, paste this server URL and click “Next”:
```
https://api.tuvoz.io/mcp
```
Sign in. Gemini opens Tuvoz’s sign-in. Sign in with Google and approve. The first time, you’ll also verify your mobile number and confirm your legal name, which is the name the voice agent gives when someone asks who it’s calling for.
Ask for a call in a new chat: type @, pick Tuvoz and ask. This works in the Gemini app on your phone too.

Then make the test call below to hear the opener a business would hear.

During a call

Ask with @Tuvoz. Gemini follows the Tuvoz skill: it shows you the brief, the number and the opening line, and waits for your yes; while the call runs it answers the voice agent’s questions (you confirm each answer) or has Tuvoz call you, and at the end it reports the outcome and the minutes used (how the backchannel works). To follow along, open Calls in your Tuvoz dashboard.

Your first test call

Ask Gemini for a test call, in your own words or with this. Tuvoz calls your own phone; the first time, it asks you to press 1 to confirm you agree to AI calls on that number, unless your Tuvoz assistant called you to verify it.

Make a Tuvoz test call to my phone.

Example prompts

@Tuvoz call Luigi's Trattoria at (415) 555-0142 and ask if they can seat 6 tonight at 7. If not, ask about 8.
@Tuvoz here's my order confirmation. Call the store at (312) 555-0177 and ask when it will ship.
@Tuvoz make a test call to my phone.

Limits and caveats

You add the skill and the custom app on gemini.google.com in a browser on a computer. The Gemini mobile app can't add skills or custom apps; once both are added, calls work there too.
Skills and custom apps need a personal Google Account (not a work or school account), age 18 or older and Keep Activity turned on. Custom apps also need you in the US, with Gemini in English.
To update the skill, download the new Markdown file and upload it with Replace skill on Gemini's Skills page.
Gemini asks you to confirm each action Tuvoz takes: placing the call, answering the voice agent and hanging up. Confirm an answer within about 10 seconds, or Tuvoz calls your phone with the question instead.
Gemini checks a live call in waits of up to 25 seconds. If it stops checking, Tuvoz calls your verified phone a few seconds after the voice agent asks a question, and asks you.
Your sign-in stays until you remove Tuvoz in Gemini's Connected Apps, or revoke it under Connected agents in your Tuvoz dashboard.

FAQ

What do I add to Gemini?: Two things: the Tuvoz skill, the playbook Gemini follows to write the brief, wait for your yes, watch the call and answer the voice agent; and the Tuvoz custom app, the tools that place and follow the call. You add both once and sign in once.
Do I need to paste an API key?: No. Gemini signs in to Tuvoz with OAuth: you sign in with Google on Tuvoz's site and approve. Gemini never sees your password, and you can disconnect it any time under Connected agents.
Can I use it in the Gemini app on my phone?: Yes, once you've added the skill and the custom app on gemini.google.com from a computer. The mobile app can't add skills or custom apps, but it uses the ones you've added.
Why does Gemini keep asking me to confirm?: Gemini asks before every action a custom app takes that changes something. For Tuvoz that's placing a call, answering the voice agent, sending it an instruction and hanging up. Checking on the call needs no confirmation. If you don't confirm an answer in time, Tuvoz calls your phone and you answer the question yourself.
What if I close the chat during a call?: The call keeps going. If the voice agent has a question and Gemini isn't checking in, Tuvoz calls your verified phone, asks you, and passes the answer back into the call.