Rosi
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Capability Guide

Set up
Rosi Calls.

Rosi Calls is the phone-calling capability inside the app. It uses your own Telnyx account so Rosi can place bounded outbound calls on your behalf. This guide is written for a normal user, not for a telecom engineer.

Default path One Telnyx account and one Telnyx API key.
Not required No Twilio, ElevenLabs, or OpenRouter setup for the default path.
Works for Message delivery, table reservations, and bounded appointment calls.
Create a Telnyx account Buy a phone number Open API keys
Overview

What Rosi Calls uses today

Provider

Telnyx is the default one-account setup path for phone calling.

Voice

The default path uses the provider voice. You do not need to configure a separate voice service.

Number

Rosi calls from your active Telnyx number, not from a shared product-owned phone line.

Setup inside Rosi

The app only needs your Telnyx API key on the capability page.

Rosi Calls is a product capability, not a connector. You are enabling phone calling in Rosi with your own provider account.
Open these pages

The exact links you probably need

Step by step

How to set it up

1

Create your Telnyx account

Start at telnyx.com/sign-up and finish the normal signup flow.

2

Get a phone number

Open Search & Buy Numbers in Telnyx and choose a number that can place outbound calls in the countries you care about.

Mission Control Portal → Numbers → Search & Buy Numbers
  • Choose the country and area code you want.
  • Make sure the number supports voice calling.
  • Make sure the number is active.
  • If you want a local number outside the US, check Telnyx number requirements before buying.
3

Create an API key

Open API Keys in Telnyx, click Create API Key, then copy the key immediately.

Mission Control Portal → Your name in the top-right corner → API Keys
  • Give it a clear name like Rosi Calls.
  • Telnyx only shows the full key once, so copy it right away.
  • If you want screenshots, use the official API key guide.
4

Open the Rosi app and go to Rosi Calls

In the Mac app, open the dedicated Rosi Calls capability page, paste the Telnyx API key, and save it.

5

Let Rosi validate the key

Rosi confirms that the API key works and checks whether your account already has an active outbound number. You do not need to create assistants, voices, or extra services yourself for the default path.

If Rosi says the capability still needs attention, the usual reason is that your Telnyx account has no active phone number yet.
Verification

How to test the first call

Once the capability page shows Ready, try a simple bounded request like:

  • call my wife and tell her I'll be 20 minutes late
  • call Luigi and book a table for 2 tomorrow at 3pm

Rosi should place the call, watch for completion, and report the result back into the same conversation.

Rosi prepares the saved phone assistant lazily on the first live call. Saving the API key is only supposed to validate your account and keep the capability configured.
Common issues

What to check if setup fails

The API key is rejected

Make sure you copied the full Telnyx API key and did not include extra spaces before or after it.

No active phone number found

Go back to Telnyx and confirm your number is active and able to place outbound calls.

The call still cannot start

Check whether your Telnyx account and number support the country you are trying to call.

You need provider detail

Open the deeper Telnyx-specific guide if you want the exact provider-oriented setup path.

Telnyx-specific guide Privacy Terms