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Phone call MCP server

Your AI agent has the context. Give it a way to call.

Tuvoz connects your AI agent to a real US phone line. Ask it to check stock, move an appointment or follow up on an order. The voice agent handles the conversation and asks your agent when it needs an answer.

Available for users in the US, Canada and the UK. A US caller ID is used for calls.

Paste this into your agent chat

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

15 minutes of free talk time to start. Then 10¢ a minute, billed per second, with a 30-second minimum per answered call leg, including calls to your own phone. Pricing and billing.

Illustrative call walkthrough

A stock check becomes a question.

  1. You approve the task.

    Ask the store whether the blue model is available. Do not place an order.

  2. The store offers a different model.

    “We have the black one. Would that work?”

  3. Your agent gets the question.

    It can answer from your instructions or ask you in chat. If it cannot answer in time, Tuvoz calls your phone.

A scripted example of the workflow. The outcome depends on the call and the authority you give your agent.

See how mid-call questions work

Connect the agent you already use.

Use the guide for your client. The hosted MCP endpoint is https://api.tuvoz.io/mcp; the guide explains the required skill, connector or plugin and sign-in.

Claude

Plugin and connector

Setup instructions

ChatGPT

Desktop plugin

Setup instructions

Claude Code

Skill and CLI

Setup instructions

Codex

Skill and CLI

Setup instructions

Gemini

Connector or skill

Setup instructions

Other agents

Choose the supported setup

Setup instructions

Start with one call you can verify.

Check store stock

Specify the model and the alternatives you would accept. Ask for availability before deciding to buy.

Stock-check example

Reschedule a visit

Give the existing appointment and acceptable replacements. Keep it if none of the new times work.

Appointment example

Wait on hold

Let the voice agent handle the queue and menu, with clear instructions for the person who answers.

Hold and menu example

Building your own voice stack? Explore the MIT-licensed bridge. Comparing hosted tools? Compare Tuvoz with Vapi and Retell.

Questions about AI phone tools

What is a phone call MCP server?

It gives a compatible AI agent tools for placing and following phone calls through the Model Context Protocol. Tuvoz's voice agent handles the spoken conversation; your agent supplies context and answers questions during the call.

Does every agent use the same setup?

No. Some clients use the hosted MCP connector and Google sign-in, while coding agents can use the Tuvoz skill and CLI. Follow your agent's guide; a server URL alone does not install the skill or complete sign-in.

What happens when the voice agent does not know the answer?

It asks your agent through a backchannel. Your agent can answer from the context and tools you authorized. If it cannot answer or is not watching, Tuvoz calls your verified phone.

Can I host the calling bridge myself?

Yes. The bridge is open source under the MIT license. You provide and pay for the telephony and voice providers, and operate the server. The hosted Tuvoz service handles those operations for you.

Can this answer inbound calls for my business?

Tuvoz for Small Business is a separate forthcoming offer for inbound answering and scheduling. Join its waitlist; the live agent-calling service described on this page places outbound calls.

Hear the first call on your own phone.

Set up your agent, sign in, and ask for a Tuvoz test call. Your agent walks you through the next step.

Start free

Looking for an AI receptionist for your business? Join the inbound answering waitlist.