What can I automate with Twilio Voice in Sim?

With Sim you can: Make Call; List Calls; Get Recording. Each action runs inside an AI agent block, so you can combine Twilio Voice with LLM reasoning, conditional logic, and data from any other connected service.

How do I connect Twilio Voice to Sim?

Getting started takes under five minutes: (1) Create a free account at sim.ai. (2) Open a new workflow. (3) Drag a Twilio Voice block onto the canvas. (4) Authenticate your account to connect. (5) Choose the tool you want to use, wire it to the inputs you need, and click Run. Your automation is live.

Can I use Twilio Voice as a tool inside an AI agent in Sim?

Yes — this is one of Sim's core capabilities. Instead of hard-coding when and how Twilio Voice is used, you give an AI agent access to Twilio Voice tools and describe the goal in plain language. The agent decides which tools to call, in what order, and how to handle the results. This means your automation adapts to context rather than breaking when inputs change.

How do I make call with Twilio Voice in Sim?

Add a Twilio Voice block to your workflow and select "Make Call" as the tool. Fill in the required fields — you can reference outputs from earlier steps, such as text generated by an AI agent or data fetched from another integration. No code is required.

How do I trigger a Sim workflow from Twilio Voice automatically?

In your Sim workflow, switch the Twilio Voice block to Trigger mode and copy the generated webhook URL. Paste that URL into Twilio Voice's webhook settings and select the events you want to listen for (Twilio Voice Webhook). From that point on, every matching event in Twilio Voice instantly fires your workflow — no polling, no delay.

What data does Sim receive when a Twilio Voice event triggers a workflow?

When Twilio Voice fires a webhook, Sim receives the full event payload that Twilio Voice sends — typically the record or object that changed, along with metadata like the event type and timestamp. Inside your workflow, every field from that payload is available as a variable you can pass to AI agents, conditions, or other integrations.

What Twilio Voice tools does Sim support?

Sim supports 3 Twilio Voice tools: Make Call, List Calls, Get Recording.

Is the Twilio Voice integration free to use?

Yes — Sim's free plan includes access to the Twilio Voice integration and every other integration in the library. No credit card is needed to get started. Visit sim.ai to create your account.

Integration

Twilio Voice

Make and manage phone calls

Start building free View docs

Overview

Integrate Twilio Voice into the workflow. Make outbound calls and retrieve call recordings.

How to automate Twilio Voice with Sim

Create a free account
Sign up at sim.ai in seconds. No credit card required. Your workspace is ready immediately.
Add a Twilio Voice block
Open a workflow, drag a Twilio Voice block onto the canvas, and authenticate your account.
Configure, connect, and run
Pick the tool you need, wire in an AI agent for reasoning or data transformation, and run. Your Twilio Voice automation is live.

Real-time triggers

Connect a Twilio Voice webhook to Sim and your workflow fires the instant an event happens — no polling, no delay. Sim receives the full event payload and makes every field available as a variable inside your workflow.

Event
Twilio Voice Webhook
Trigger workflow when phone calls are received via Twilio Voice

Supported tools

3 Twilio Voice tools available in Sim

Make Call
Make an outbound phone call using Twilio Voice API.
List Calls
Retrieve a list of calls made to and from an account.
Get Recording
Retrieve call recording information and transcription (if enabled via TwiML).

Frequently asked questions

Sim's Twilio Voice integration lets you build AI-powered workflows that automate tasks in Twilio Voice without writing code. Make and manage phone calls You can connect Twilio Voice to hundreds of other services in the same workflow — from CRMs and spreadsheets to messaging tools and databases.

Start automating Twilio Voice today

Build your first AI workflow with Twilio Voice in minutes. Connect to every tool your team uses. Free to start — no credit card required.

Build for free →