Managed Agents at Previously $0.06 $0.03/minManaged Agents are Previously $0.06 $0.03/min.
Automation

Zapier AI voice agents that send call data to thousands of apps

The agent calls a Zap's webhook as a tool, or Cartesia sends the finished call to it, and the Zap carries the data to the apps you use.

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Lead capture agent

Collects details and passes them to a Zap.

Instructions

Collect the caller's name, phone and request. Send them to the Zap, then tell the caller the request was passed on. Transfer to the office line if the caller asks for a person.

Handoff
Office

Connected tools

  • Send to ZapWebhook
  • Transfer to officeTransfer

What a Zapier AI voice agent can do

Open one to watch a call. The grey lines are the tools the agent calls mid-sentence.

The agent posts the caller's details to a catch hook, and the Zap creates the record in whichever app you pick.

Tool definitions

Webhook tools go to POST /v1/agents/tools. Transfers are a system tool on the agent. Replace the placeholder values in capitals with your own.

Webhook

Send to Zap

Posts the caller's details to a catch hook.

Show the JSON definition
send_to_zap
{
  "type": "webhook",
  "name": "send_to_zap",
  "description": "Sends the caller's details to the automation. Use it after the caller confirms.",
  "pre_tool_speech": "auto",
  "execution_mode": "immediate",
  "response_timeout_secs": 20,
  "api_schema": {
    "url": "https://hooks.zapier.com/hooks/catch/YOUR_ACCOUNT_ID/YOUR_HOOK_ID/",
    "method": "POST",
    "request_body_schema": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string",
          "description": "Caller's name."
        },
        "phone": {
          "type": "string",
          "dynamic_variable": "system__caller_id"
        },
        "request": {
          "type": "string",
          "description": "What the caller asked for."
        }
      },
      "required": [
        "name",
        "request"
      ]
    }
  }
}

Transfer

Transfer to office

Cold transfer to your office.

Show the JSON definition
transfer_to_office
{
  "config": {
    "system_tools": {
      "transfer_to_number": {
        "description": null,
        "pre_tool_speech": "auto",
        "transfers": [
          {
            "destination": {
              "type": "phone",
              "phone_number": "+14155550125"
            },
            "condition": "The caller asks for a person."
          }
        ]
      }
    }
  }
}

Set it up

Through Webhooks by Zapier. The agent has no Zapier-specific app. A webhook tool posts to your Zap's catch hook URL. Vendor details read in October 2026.

  1. Create a Zap with a catch hook

    Choose Webhooks by Zapier as the trigger, with the Catch Hook event, and copy the hook URL.

  2. Add the webhook tool

    Paste the URL and define the fields the Zap expects.

  3. Test the trigger

    Call the agent once so Zapier can read a sample, then add your action steps.

  4. Add call events if you want them

    Register a Cartesia call-events webhook that points at a second hook for post-call work.

Documentation

Before you build

Zapier plans

Webhooks by Zapier may need a paid Zapier plan. Check what yours includes before you build the Zap.

Zapier is not the system of record

A catch hook sends a fixed reply, so the agent can't tell whether the Zap's later steps worked. Keep critical writes in a direct tool.

Use cases for teams on Zapier

Appointment scheduling

Book, reschedule and confirm appointments on your calendar, 24/7.

See the use case

Customer support

Resolve support calls on the first try, refund and credit within your rules, and keep customers who call to cancel.

See the use case

SDR and lead qualification

Call new leads within minutes, qualify them on your criteria, and book meetings with your reps.

See the use case

More integrations

All integrations
Automation

Make

Trigger a Make scenario from a voice agent through a custom webhook, and run the call's data into your apps.

  • Managed Agents
See the integration
Automation

n8n

Call an n8n workflow from a voice agent through a webhook node, and run it on your own server.

  • Managed Agents
See the integration
Webhook tool

Google Sheets

Log each call or lead as a row in Google Sheets, through a service that holds the service account and calls values.append.

  • Managed Agents
See the integration

Enterprise-grade security

  • HIPAA compliant badge

    HIPAA compliant

  • SOC 2 Type 2 badge

    SOC 2 Type 2

  • GDPR badge

    GDPR

Zapier AI voice agent FAQs

How do I connect an AI voice agent to Zapier?

Start a Zap with a Webhooks by Zapier catch hook and add its URL to a Cartesia webhook tool. The agent posts the caller's details to the hook during the call, and the Zap carries them to the apps you connect. There is no Cartesia app in Zapier.

Can the Zap talk back to the caller?

No. Zapier's help center says a live catch hook returns a 200 response that can't be customized, so the agent hears only that the request arrived. If the agent needs an answer from the workflow, use Make's webhook response module (Make page) or n8n's Respond to Webhook node (n8n page).

Which Zapier plan do I need for webhooks?

A paid one. Zapier's help center lists Webhooks by Zapier on the Professional, Team and Enterprise plans, not Free. Check what your plan includes before you build the Zap, because without a catch hook the agent has no way to reach it.

Can a Zap run after the call ends?

Yes. Register a Cartesia call-events webhook that points at a second catch hook, and that Zap can send the follow-up email or fill a sheet once the call is over. Keep it separate from the Zap the agent calls during the conversation.

Who bills what on a Zapier setup?

Cartesia bills the call and Zapier bills the Zap. Agents run at $0.03/min, plus LLM usage and telephony, and the Zap's tasks count against your Zapier plan. Keep critical writes in a direct tool, because the agent can't see whether a Zap step failed.

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